Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (hieu va)) cau truc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh vai cua tre*.