Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu vien » hieu hien, hieu viec, thieu nien
ban thanh » ban hanh, ban hang
bac thuc » bao thuc, bac thua, cach thuc
thuc ban » thuoc ban, thuc dan, thu ban
toc sach » hoc sach, doc sach, thuoc sach
vien bac » vien bach, vien cac, mien bac
chi tre » choi tre, chi tro, chi tiet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cho tre » cho thue, khoe tre

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 bac thuc ban thanh van ((chi tre) or (cho tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky nang xa hoi. hieu vien bac thuc ban thanh van ((chi tre) OR (cho tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky nang xa hoi. hieu vien bac thuc ban thanh van ((chi tre) or (cho tre))*.