Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
cong bang » cuong bang, dong bang, hong bang
thanh ban » thanh san, thanh van, thanh bac
chi sach » chinh sach, chieu sach, co sach
tranh xa » trach xa, trang xa, tranh ha
trinh xa » trinh xay, trinh xac, trinh da
than ban » toan ban, than man, nhuan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - canh ((tranh xa) or (trinh xa)) truong cong bang ((than ban) OR (thanh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - canh ((tranh xa) OR (trinh xa)) truong cong bang ((than ban) OR (thanh ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi sach - canh ((tranh xa) or (trinh xa)) truong cong bang ((than ban) OR (thanh ban))".
• Adding a wildcard symbol may retrieve word variants: doi chi sach - canh ((tranh xa) or (trinh xa)) truong cong bang ((than ban) OR (thanh ban))*.