Perhaps you should try some spelling variations:
ban hang » ngan hang
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
cam cuc » cam xuc, cham cuu, pham cuc
hieu ve » hieu va, hieu van
nang mo » nang meo, nang ma, nang co
ve cam » ve cham, ve cac, va cam
mo hoi » mo phoi, mo hoc, co hoi
cua te » cua tu

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 nang mo hoi. hieu ve cam cuc ((ban hanh) or (ban hang)) doi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mo hoi. hieu ve cam cuc ((ban hanh) OR (ban hang)) doi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mo hoi. hieu ve cam cuc ((ban hanh) or (ban hang)) doi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mo hoi. hieu ve cam cuc ((ban hanh) or (ban hang)) doi ((cua tre) OR (cua te))*.