Perhaps you should try some spelling variations:
quang hung » quang dung, quang phuong, quang trung
hieu manh » chieu xanh, hieu nganh, dieu hanh
van doanh » toan doanh, van dong, van thanh
qua nhung » quan nhung, cua nhung, qua chung
hach toan » thanh toan, manh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
tac toan » tap toan, tam toan, tich toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - van doanh ((quang hung) or (qua nhung)) cong ((tac toan) OR (hach toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - van doanh ((quang hung) OR (qua nhung)) cong ((tac toan) OR (hach toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - van doanh ((quang hung) or (qua nhung)) cong ((tac toan) OR (hach toan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - van doanh ((quang hung) or (qua nhung)) cong ((tac toan) OR (hach toan)) tap*.