Perhaps you should try some spelling variations:
tuan trong » thuan trong, quan trong, tran trong
lieu tinh » trieu tinh, bien tinh
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((lieu tinh) OR (diep tinh)) - hanh tran tuan trong cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((lieu tinh) OR (diep tinh)) - hanh tran tuan trong cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) OR (diep tinh)) - hanh tran tuan trong cong tac toan cau*.