Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
cuu tre » cua tre, cau tren
xa hanh » xa thanh, xa khanh, va hanh
nam tuc » nam thuc, nam truc, nam tu
te sach » toc sach
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang ma) OR (sang ma)) hoi. hieu va nam tuc xa hanh vi ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. hieu va nam tuc xa hanh vi ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang ma) OR (sang ma)) hoi. hieu va nam tuc xa hanh vi ((cuu tre) or (cau treo))*".