Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
doi chiu » doi chieu, hoi chiu, doi chinh
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chiu) OR (doi chi)) trach - hanh trang cua dung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chiu) OR (doi chi)) trach - hanh trang cua dung cong tac toan cau*".