Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
quan trong » gian trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
anh tang » anh bang, anh dang, anh nang
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
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: hoc hieu manh - ((anh tang) or (hanh trinh)) quan trong cong san ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((anh tang) OR (hanh trinh)) quan trong cong san ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((anh tang) or (hanh trinh)) quan trong cong san ((toan cau) or (toan tap))*.