Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cua triet, dua tren
sach ly » sach y, sach lo, sach ty
cuu tre » cau tren, cau treo
cau tuc » cau truc, cau tu, cau luc
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
va cau » van cau, va cac, va dau

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