Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
van hanh » van thanh, ban hanh, van anh
tai cua » thai cua, tai cuc, tri cua
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
vu sach » vu bach, su sach, vu khach
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: ((thu sach) or (vu sach)) ky lang xa hoi. hieu vu cham tuc ((van hanh) or (ban thanh)) tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (vu sach)) ky lang xa hoi. hieu vu cham tuc ((van hanh) OR (ban thanh)) tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (vu sach)) ky lang xa hoi. hieu vu cham tuc ((van hanh) or (ban thanh)) tai cua te*.