Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
cam duc » cam xuc, cao duc, pham duc
san cho » sang cho, san chi, san co
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va
san kho » san khoa, lan kho, san ho
duc van » duc va, duc tan, duc manh
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san kho) OR (san cho)) tang xa hoi. ((hieu ve) or (hieu van)) cam duc van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san kho) OR (san cho)) tang xa hoi. ((hieu ve) OR (hieu van)) cam duc van hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san kho) OR (san cho)) tang xa hoi. ((hieu ve) or (hieu van)) cam duc van hanh vi cuu tre*".