Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thien van » thi van
thu tang » thu trang, thu thang, thu hang
thuc van » thuc vat, thuc dan, thuc va
sach thu » sach thue, sach thieu, sach tham
su sach » so sach, vu sach
van anh » van thanh, tuan anh, van minh
hieu ve » hieu va, hieu van
anh vi » hanh vi, anh va, anh ve
vi hoa » voi hoa, vi hoc, va hoa
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thu tang ((ma hoi) or (ma hoa)). ((hieu ve) or (thien van)) tham thuc van anh vi hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu tang ((ma hoi) OR (ma hoa)). ((hieu ve) OR (thien van)) tham thuc van anh vi hoa viet.
• Adding a wildcard symbol may retrieve word variants: su sach thu tang ((ma hoi) or (ma hoa)). ((hieu ve) or (thien van)) tham thuc van anh vi hoa viet*.