Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
thu sang » thu san, thu bang, thu dang
cham duc » pham duc, cham soc, pham duy
thu hang » thi hang, thuc hanh, thu huong
tu sach » thu sach, su sach, tu cach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) ((thu sang) or (thu hang)) ma hoi. hieu vu cham duc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ((thu sang) OR (thu hang)) ma hoi. hieu vu cham duc va hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ((thu sang) or (thu hang)) ma hoi. hieu vu cham duc va hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ((thu sang) or (thu hang)) ma hoi. hieu vu cham duc va hanh lai cua tre*.