Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh quan
trinh han » trinh quan
theo chu » theo chieu, cho chu, chao chu
chu tinh » chau tinh, chua tinh, cuu tinh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan dau » phan tu, hang dau

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 tinh - canh ((trinh toan) or (trinh han)) nhung ((cong dan) or (cong san)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu tinh - canh ((trinh toan) OR (trinh han)) nhung ((cong dan) OR (cong san)) phan dau.
• Adding a wildcard symbol may retrieve word variants: theo chu tinh - canh ((trinh toan) or (trinh han)) nhung ((cong dan) or (cong san)) phan dau*.