Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
van thanh » ban thanh, van tuan
van toan » van tuan, van tan, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((lieu tinh) or (chieu sach)) - hanh tranh cua nhung chong ((van toan) OR (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((lieu tinh) OR (chieu sach)) - hanh tranh cua nhung chong ((van toan) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((lieu tinh) or (chieu sach)) - hanh tranh cua nhung chong ((van toan) OR (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((lieu tinh) or (chieu sach)) - hanh tranh cua nhung chong ((van toan) OR (van thanh)) cau*.