Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hanh dong » anh dong, ha dong
dong luan » dung luan, tong luan, dong xuan
cong bang » cuong bang, dong bang, hong bang
nhung cau » chung cu, nhung bai, nhu cau
theo chu » theo chieu, cho chu, chao chu
ho chieu » theo chieu, hoc thieu, doi chieu
hang cau » hang dau, hang ca, nang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (ho chieu)) sang - hanh dong luan trong cong bang ((hang cau) OR (nhung cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (ho chieu)) sang - hanh dong luan trong cong bang ((hang cau) OR (nhung cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (ho chieu)) sang - hanh dong luan trong cong bang ((hang cau) OR (nhung cau))".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (ho chieu)) sang - hanh dong luan trong cong bang ((hang cau) OR (nhung cau))*.