Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan chung » luan chinh
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
cong tac » cong ty
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: theo chua xang - hanh trinh luan chung ((cong tac) or (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua xang - hanh trinh luan chung ((cong tac) OR (huong dan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo chua xang - hanh trinh luan chung ((cong tac) or (huong dan)) toan tap*.