Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh vai » hanh vi, hanh va, hanh tai
cau thuc » cau truc, cuu thuc, can thuc
hieu va » lieu va, hieu qua
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu van
cao hoi » cau hoi, co hoi, cao hoc
ly vang » ly hang, ly van, ly quang
ly nang » ky nang, ly hang, ly quang

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 ((ly nang) OR (ly vang)) cao hoi. ((hieu ve) or (hieu va)) cau thuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ly nang) OR (ly vang)) cao hoi. ((hieu ve) OR (hieu va)) cau thuc va hanh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((ly nang) OR (ly vang)) cao hoi. ((hieu ve) or (hieu va)) cau thuc va hanh vai cuu tre*".