Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
doi chinh » do chinh, tai chinh, hoc chinh
cong bang » cuong bang, dong bang, hong bang
bang than » bang thanh, ban than, sang than
tranh xa » trinh xa, trach xa, trang xa
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chinh sach - canh ((tranh xa) or (trinh ky)) truong cong bang than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - canh ((tranh xa) OR (trinh ky)) truong cong bang than ban*.