Perhaps you should try some spelling variations:
trinh trong » trinh truong, tranh trong, trinh trung
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
trong con » trong cong, trong co, trong can
dung cong » dung trong
con dung » con duong, cong dung, con rung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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) or (hieu lang)) - trinh trong con dung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu lang)) - trinh trong con dung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu lang)) - trinh trong con dung cong san toan ban*.