Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
doanh vai » doanh tai, doanh va, doanh van
toc sach » hoc sach, doc sach, thuoc sach
vien cac » vien bach, vien dai, vien da
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
lo toan » lo tan, le toan, ly toan
cac lo » cac lop, cac co, cac bo
cua tu » cua tuc, cua su, cua cu

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 toan doanh vai ((cua te) OR (cua tu))~.
• 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 toan doanh vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) ky nang xa hoi. hieu vien cac lo toan doanh vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky nang xa hoi. hieu vien cac lo toan doanh vai ((cua te) OR (cua tu))*.