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From letters S, A, L, V, A, G, E, D  I made following words

8 letter words

salvaged[13]

7 letter words

savaged[12], lavages[11], salvage[11], geladas[9]

6 letter words

lavage[10], agaves[10], savage[10], salved[10], slaved[10], gavels[10], gelada[8], adages[8], glades[8], galeas[7]

5 letter words

agave[9], laved[9], vagal[9], gavel[9], devas[9], saved[9], avgas[9], velds[9], lavas[8], vasal[8], laves[8], salve[8], selva[8], slave[8], vales[8], valse[8], veals[8], adage[7], glade[7], degas[7], egads[7], glads[7], gelds[7], gleds[7], algae[6], galea[6], salad[6], dales[6], deals[6], lades[6], lased[6], leads[6], algas[6], galas[6], gales[6]

4 letter words

deva[8], gave[8], veld[8], devs[8], lava[7], lave[7], leva[7], vale[7], veal[7], vela[7], vasa[7], aves[7], save[7], vase[7], lavs[7], aged[6], egad[6], gaed[6], glad[6], geld[6], gled[6], dags[6], gads[6], geds[6], dale[5], deal[5], lade[5], lead[5], alga[5], gala[5], egal[5], gale[5], sade[5], agas[5], saga[5], ages[5], gaes[5], sage[5], dals[5], lads[5], dels[5], elds[5], sled[5], gals[5], lags[5], slag[5], gels[5], legs[5], alae[4], asea[4], aals[4], alas[4], ales[4], lase[4], leas[4], sale[4], seal[4]

3 letter words

dev[7], veg[7], ava[6], ave[6], lav[6], lev[6], vas[6], dag[5], gad[5], ged[5], aga[4], age[4], gae[4], dal[4], lad[4], del[4], eld[4], led[4], gal[4], lag[4], gel[4], leg[4], ads[4], sad[4], eds[4], ags[4], gas[4], sag[4], seg[4], aal[3], ala[3], ale[3], lea[3], aas[3], sae[3], sea[3], als[3], las[3], sal[3], els[3], les[3], sel[3]

2 letter words

ad[3], de[3], ed[3], ag[3], aa[2], ae[2], al[2], la[2], el[2], as[2], es[2]