Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
theo chau » theo chu, theo chieu, theo phap
chau tinh » cuu tinh, ha tinh, cua tinh
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
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 chau tinh - ((hanh trang) or (thanh trung)) ((cua dung) OR (qua dung)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chau tinh - ((hanh trang) OR (thanh trung)) ((cua dung) OR (qua dung)) cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chau tinh - ((hanh trang) or (thanh trung)) ((cua dung) OR (qua dung)) cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chau tinh - ((hanh trang) or (thanh trung)) ((cua dung) OR (qua dung)) cong tac toan cau*.