Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
van thang » van thanh, van hang, van than
van khang » van khanh, van thanh, van quang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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

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