Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
hanh bi » hanh vi, thanh bai, khanh bui
va cam » va cham, va cac, va cao
tuc va » thuc va, tuc xa, duc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu nang x hoi. hieu va cam ((tuc va) or (truc va)) hanh bi dau tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang x hoi. hieu va cam ((tuc va) OR (truc va)) hanh bi dau tieng.
• Adding a wildcard symbol may retrieve word variants: te sach tu nang x hoi. hieu va cam ((tuc va) or (truc va)) hanh bi dau tieng*.