Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
van doanh » toan doanh, van dong, van thanh
dau theo » cau theo, dai theo, dam theo
pham duy » pham duc
dau treo » dau tren, cau treo, dau tien
thu sach » tu sach, thuat sach, thuoc sach
thu nang » thi nang, thu hang, thu bang
su sach » so sach, vu sach
duy van » duy vat, dung van
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) thu nang x hoi. hieu ve pham duy van doanh van ((dau treo) OR (dau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) thu nang x hoi. hieu ve pham duy van doanh van ((dau treo) OR (dau theo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thu sach)) thu nang x hoi. hieu ve pham duy van doanh van ((dau treo) OR (dau theo))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) thu nang x hoi. hieu ve pham duy van doanh van ((dau treo) OR (dau theo))*.