Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
van thanh » van tuan
cao suc » cao su, cao duc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y sang » _ sang, duy sang
ma hoi » xa hoi, ma hoa, me hoi
vi cua » vai cua, di cua
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y sang ((ma hoi) or (mai hoi)). hieu ve cao suc ((van thanh) OR (ban thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y sang ((ma hoi) OR (mai hoi)). hieu ve cao suc ((van thanh) OR (ban thanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y sang ((ma hoi) or (mai hoi)). hieu ve cao suc ((van thanh) OR (ban thanh)) vi cua tre*".