Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
ban hang » ngan hang
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cua triet, dua tren
hang vi » hang va, hanh vi, hang di
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. ((hieu van) OR (hieu va)) cam xuc ban hang vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi ((cua tre) OR (cuu tre))*.