Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
luan nhung » luan chung, luan hung, quan nhung
cong thanh » dong thanh, cong trinh, truong thanh
chau tinh » cuu tinh, ha tinh, cua tinh
cong tan » cong tac, cong san, cong ty
hoa dau » hoa dan, hoa dai, hoa dam

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) or (chau tinh)) - hanh tranh luan nhung ((cong thanh) OR (cong tan)) hoa dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chau tinh)) - hanh tranh luan nhung ((cong thanh) OR (cong tan)) hoa dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chau tinh)) - hanh tranh luan nhung ((cong thanh) OR (cong tan)) hoa dau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chau tinh)) - hanh tranh luan nhung ((cong thanh) OR (cong tan)) hoa dau*.