Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
phan cua » nhan cua, than cua, han cua
phat cua » nhat cua, chat cua, hai cua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky lang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh ((phan cua) OR (phat cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky lang xa hoi. ((hieu ve) OR (hieu va)) pham duc ban thanh ((phan cua) OR (phat cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky lang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh ((phan cua) OR (phat cua)) te".
• Adding a wildcard symbol may retrieve word variants: su cac ky lang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh ((phan cua) OR (phat cua)) te*.