Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
lai cua » dai cua, hai cua, lai chau
tu nang » tru nang, tu nong, tu nano
va hanh » van hanh, va thanh, va danh
co hoi » co hoc, co loi
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: ((te sach) OR (toc sach)) tu nang ((cau hoi) or (co hoi)). hieu van tham nuoc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu nang ((cau hoi) OR (co hoi)). hieu van tham nuoc va hanh lai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) tu nang ((cau hoi) or (co hoi)). hieu van tham nuoc va hanh lai cua te*".