Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - hanh trinh quan hang cong ban ((van ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - hanh trinh quan hang cong ban ((van ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - hanh trinh quan hang cong ban ((van ban) or (toan tap))*.