Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
lai cua » dai cua, hai cua, lai chau
va cao » va co, va dao, va bao
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach tu nang ((ma hoi) or (xa hoi)). hieu ((va cac) or (va cao)) xuc va hanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tu nang ((ma hoi) OR (xa hoi)). hieu ((va cac) OR (va cao)) xuc va hanh lai cua vat.
• Adding a wildcard symbol may retrieve word variants: thu sach tu nang ((ma hoi) or (xa hoi)). hieu ((va cac) or (va cao)) xuc va hanh lai cua vat*.