Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
ban hang » ngan hang
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
so viet » hoc viet
tu sai » tu bai, tu san, tu cai
sai ky » sac ky

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 lang xa hoi. hieu van pham duc ((tuan anh) or (ban hang)) de ((so viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky lang xa hoi. hieu van pham duc ((tuan anh) OR (ban hang)) de ((so viet) OR (cua vat)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky lang xa hoi. hieu van pham duc ((tuan anh) or (ban hang)) de ((so viet) or (cua vat))*.