Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
cap dung » cao dung, chan dung, cach dung
cong van » cong vang, cong san, song van
ap dung » xay dung, van dung
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chiet tach) or (chieu sach)) - thanh trung ((cap dung) OR (ap dung)) cong van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (chieu sach)) - thanh trung ((cap dung) OR (ap dung)) cong van tan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chiet tach) or (chieu sach)) - thanh trung ((cap dung) OR (ap dung)) cong van tan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (chieu sach)) - thanh trung ((cap dung) OR (ap dung)) cong van tan tap*.