Perhaps you should try some spelling variations:
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
va dinh » van dinh, va kinh, va tinh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
san ky » sang ky, van ky, dan ky
cam tu » cam thu, nam tu, dam tu
te san » te ban, ke san, tu san

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 nang xa hoi. hieu van cam tu ((ban hanh) or (va dinh)) dai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky nang xa hoi. hieu van cam tu ((ban hanh) OR (va dinh)) dai ((cuu tre) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky nang xa hoi. hieu van cam tu ((ban hanh) or (va dinh)) dai ((cuu tre) OR (cua tre))*".