Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan thong » quang thong, quan trong, xuan thong
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - hanh trinh quan thong ((cong tan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - hanh trinh quan thong ((cong tan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - hanh trinh quan thong ((cong tan) or (cong san)) toan cao*.