Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh dinh
hanh trang » thanh trung, canh tranh, hanh trinh
quang dung » quang trung, ung dung, cuong dung
doi trinh » doc trinh, doi tinh, dong trinh
cua dong » chua dong, cua cong, cua dang
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: doi trinh tinh - hanh trang ((quang dung) or (cua dong)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi trinh tinh - hanh trang ((quang dung) OR (cua dong)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi trinh tinh - hanh trang ((quang dung) or (cua dong)) cong tac toan cau*.