Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
van toan » van tuan, van tan, van thanh
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: toc ((thieu sach) or (chieu sang)) - hanh tranh cua ((nhung cong) OR (thong cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sach) OR (chieu sang)) - hanh tranh cua ((nhung cong) OR (thong cong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu sach) or (chieu sang)) - hanh tranh cua ((nhung cong) OR (thong cong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sach) or (chieu sang)) - hanh tranh cua ((nhung cong) OR (thong cong)) van toan cau*.