Perhaps you should try some spelling variations:
hien khang » hien khanh, chien thang, thieu khang
hanh tranh » canh tranh, hanh trinh, hanh trang
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien khang - hanh tranh ((cua khong) OR (hua khong)) cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien khang - hanh tranh ((cua khong) OR (hua khong)) cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien khang - hanh tranh ((cua khong) OR (hua khong)) cong dan toan tap*.