Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tuan duong » tuyen duong, tuong duong, van duong
van phong » van dong, hai phong
tan nang » van nang, ban nang, tai nang
tin nang » tin dung, ki nang, thi nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung ((tuan duong) or (van phong)) cong ((tan nang) or (tin nang)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((tuan duong) OR (van phong)) cong ((tan nang) OR (tin nang)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung ((tuan duong) or (van phong)) cong ((tan nang) or (tin nang)) cao*.