Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
chu xanh » chu manh, chieu xanh, chua xang
thang va » hang va, trang va, thong va
dang van » hoang van, hang va
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chieu sach)) - hanh ((thang va) or (dang van)) thong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chieu sach)) - hanh ((thang va) OR (dang van)) thong cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chieu sach)) - hanh ((thang va) or (dang van)) thong cong san toan cao*.