Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, dinh sach
hanh tranh » canh tranh, hanh trinh, hanh trang
sinh sach » chinh sach, sinh san, sang sach
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
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: vien ((thinh sach) OR (sinh sach)) - hanh tranh cua ((hang cong) or (bang cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vien ((thinh sach) OR (sinh sach)) - hanh tranh cua ((hang cong) OR (bang cong)) tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vien ((thinh sach) OR (sinh sach)) - hanh tranh cua ((hang cong) or (bang cong)) tac toan cau".
• Adding a wildcard symbol may retrieve word variants: vien ((thinh sach) OR (sinh sach)) - hanh tranh cua ((hang cong) or (bang cong)) tac toan cau*.