Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
ban thanh » ban hanh, ban hang
bach tuc » bach tuoc, cach thuc, sach truc
van cuau » van cau, van chat, ban cua
van cua » vang cua, ban cua, dan cua
tuc ban » thuc ban, truc ban, tu ban
tu sach » thu sach, te sach, tu cach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky tang xa hoi. hieu vien bach tuc ban thanh ((van cuau) or (van cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky tang xa hoi. hieu vien bach tuc ban thanh ((van cuau) OR (van cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky tang xa hoi. hieu vien bach tuc ban thanh ((van cuau) or (van cua)) tre*.