Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » manh trung, danh trung, hanh trong
hanh trang » canh tranh, hanh trinh, minh trang
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
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 chieu sach - ((((hanh trung) OR (thanh trung))) or (hanh trang)) tuan dang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((((hanh trung) OR (thanh trung))) OR (hanh trang)) tuan dang cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((((hanh trung) OR (thanh trung))) or (hanh trang)) tuan dang cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((((hanh trung) OR (thanh trung))) or (hanh trang)) tuan dang cong tac toan cau*.