Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan trong » gian trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hach toan » thanh toan, manh toan
toc hieu » toc thieu, doc hieu, hoc thieu
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: toc hieu manh - hanh trinh quan trong cong ((tac toan) or (hach toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - hanh trinh quan trong cong ((tac toan) OR (hach toan)) ban*.