Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
doanh hai » doanh tai, doan hai, doanh ha
van doanh » toan doanh, van dong, van thanh
toc sach » hoc sach, doc sach, thuoc sach
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
nang xa » nang x, lang xa, nang ma
cac lo » cac lop, cac co, cac ho
cac bo » bac bo, cac co
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: ((tu sach) or (toc sach)) ky nang xa hoi. hieu vien ((cac lo) or (cac bo)) van doanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky nang xa hoi. hieu vien ((cac lo) OR (cac bo)) van doanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky nang xa hoi. hieu vien ((cac lo) or (cac bo)) van doanh hai cua te*.