Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
tinh gia » danh gia
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
tinh va » tich va, trinh vat, sinh vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh ((((tinh va) OR (tinh gia))) or (trinh van)) nhung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((((tinh va) OR (tinh gia))) OR (trinh van)) nhung cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh ((((tinh va) OR (tinh gia))) or (trinh van)) nhung cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((((tinh va) OR (tinh gia))) or (trinh van)) nhung cong san toan ban*.