Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cua viet » ca viet, cua vat, cua dieu
va doanh » van doanh, vay doanh, va danh
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, tu cach
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach

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 (te sach)) ky dang xa hoi. hieu vu cham duc va doanh van ((cua viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang xa hoi. hieu vu cham duc va doanh van ((cua viet) OR (hoa viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky dang xa hoi. hieu vu cham duc va doanh van ((cua viet) OR (hoa viet))*".