Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » thien van, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
hieu va » lieu va, hieu qua
cau tuc » cau truc, cau tu, cau luc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc 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 x ho. ((hieu van) OR (hieu va)) cau tuc va hanh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x ho. ((hieu van) OR (hieu va)) cau tuc va hanh vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x ho. ((hieu van) OR (hieu va)) cau tuc va hanh vai ((cua tre) or (cuu tre))*".