Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
sai ky » sac ky
cuc te » cua te, cuc thue, cuc tieu

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 ky) or (cac ky)) ((nang xa) or (lang xa)) hoi. hieu van cam duc ban thanh tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (cac ky)) ((nang xa) OR (lang xa)) hoi. hieu van cam duc ban thanh tai cuc te.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) ((nang xa) or (lang xa)) hoi. hieu van cam duc ban thanh tai cuc te*.