Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chao chu » cho chu, cua chu, cao cho
chu tinh » chau tinh, chua tinh, cuu tinh
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
sinh va » sinh vat, tinh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu tinh - hanh ((sinh va) OR (dinh van)) nhung cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao chu tinh - hanh ((sinh va) OR (dinh van)) nhung cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: chao chu tinh - hanh ((sinh va) OR (dinh van)) nhung cong san toan ban*.