Perhaps you should try some spelling variations:
kho tang » cao tang
tang lap » sang lap, tan lap, tang ap
thanh vi » hanh vi, thanh va, thanh ve
hieu su » hieu sau, hieu so, hieu suat
tieu su » thieu so
sac kho » suc khoe, cac khoi, dac khoa
tu ban » thu ban, te ban
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
xu ban » xuc ban, vu ban, xu bac
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac kho tang lap doi. ((hieu su) or (tieu su)) chao ((xu ban) OR (tu ban)) thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac kho tang lap doi. ((hieu su) OR (tieu su)) chao ((xu ban) OR (tu ban)) thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac kho tang lap doi. ((hieu su) or (tieu su)) chao ((xu ban) OR (tu ban)) thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac kho tang lap doi. ((hieu su) or (tieu su)) chao ((xu ban) OR (tu ban)) thanh vi cua te*.