Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
hanh trang » thanh trung, canh tranh, hanh trinh
thep tinh » thep hinh, diep tinh, tap tinh
cua dang » cua ban
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
cot » cost

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

• If you are trying to use Boolean operators, they must be ALL CAPS: cot ((thep tinh) OR (thien tinh)) - hanh trang ((cua dang) OR (cua cong)) cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cot ((thep tinh) OR (thien tinh)) - hanh trang ((cua dang) or (cua cong)) cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: cot ((thep tinh) OR (thien tinh)) - hanh trang ((cua dang) or (cua cong)) cong dan toan cao*.