Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
van hanh » van thanh, ban hanh, van anh
tang van » dang van, hoang van, trong van
chat xuc » chat huu, cam xuc, chao xu
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sai kho » dai kho, tai khoa, dai khoa
tang ma » mang may
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai kho ((tang ma) OR (tang van)) hoi. hieu va chat xuc van hanh vi ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai kho ((tang ma) OR (tang van)) hoi. hieu va chat xuc van hanh vi ((cua tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai kho ((tang ma) OR (tang van)) hoi. hieu va chat xuc van hanh vi ((cua tre) or (cau treo))".
• Adding a wildcard symbol may retrieve word variants: tu sai kho ((tang ma) OR (tang van)) hoi. hieu va chat xuc van hanh vi ((cua tre) or (cau treo))*.