Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan nhung » qua nhung, cua nhung, luan chung
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh trinh quan nhung ((cong dan) or (cong san)) ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh trinh quan nhung ((cong dan) OR (cong san)) ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh trinh quan nhung ((cong dan) or (cong san)) ((toan tap) or (toan ban))*.