Perhaps you should try some spelling variations:
tham doc » than doc, tham do, tham nuoc
lang van » dang van, tang van, hoang van
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va hanh » van hanh, va thanh, va danh
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
san ky » sang ky, van ky, ban ky
dan ky » van ky
doc va » duoc va, hoc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((san ky) or (dan ky)) lang van hoi. hieu va tham doc va hanh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (dan ky)) lang van hoi. hieu va tham doc va hanh vi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te ((san ky) or (dan ky)) lang van hoi. hieu va tham doc va hanh vi ((cuu tre) or (cua tre))*.