Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach ky » sac ky, sach ty, sach kem
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
nam luc » nang luc, nhan luc, nam thuc
cua tre » cua te, cuu tre, cua triet
hieu va » hieu qua
danh ma » anh ma, danh ca, hanh ma
luc va » duc va, tuc va, loc va

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 ky) OR (sach y)) danh ma hoa. ((hieu va) or (lieu va)) nam luc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) danh ma hoa. ((hieu va) OR (lieu va)) nam luc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach y)) danh ma hoa. ((hieu va) or (lieu va)) nam luc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach y)) danh ma hoa. ((hieu va) or (lieu va)) nam luc va hanh vai cua tre*.