Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cau thuc » cau truc, cuu thuc, can thuc
dua tren » dung tren
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
van cau » van dau, van hau, van chat
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, cua thep
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang

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