Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thu nang » thu hang, thu bang, tho nang
thi nang » thi cong, ki nang, thi hanh
pham duy » pham duc
va doanh » van doanh, vay doanh, va danh
hau treo » cau treo, cau theo, dau tren
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
van hau » van ha, van hai, van dau
duy va » duy vat, duy van, day va

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 ((thu nang) or (thi nang)) xa hoi. hieu va pham duy va doanh van hau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu nang) OR (thi nang)) xa hoi. hieu va pham duy va doanh van hau treo.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu nang) or (thi nang)) xa hoi. hieu va pham duy va doanh van hau treo*.