Perhaps you should try some spelling variations:
theo tich » theo lich, theo tieu, thu tich
tich nang » tich van, tin nang
tong cong » trong cong, cong cong, dung cong
thanh cac » hanh cac, thanh bac, tranh cac
trang va » hang va
tran van » luan van
cong dan » cong san, cong tan, huong dan
thanh ca » thanh cha, thanh ha, thanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tich nang - hanh ((trang va) or (tran van)) tong cong dan ((thanh cac) or (thanh ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tich nang - hanh ((trang va) OR (tran van)) tong cong dan ((thanh cac) OR (thanh ca)).
• Adding a wildcard symbol may retrieve word variants: theo tich nang - hanh ((trang va) or (tran van)) tong cong dan ((thanh cac) or (thanh ca))*.