Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hinh sinh » tinh sinh, hinh dinh, hinh kinh
cong tang » cong thang, cong lang, cong vang
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
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 - ((hinh sinh) or (thanh tinh)) cua dung ((cong tan) or (cong tang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((hinh sinh) OR (thanh tinh)) cua dung ((cong tan) OR (cong tang)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((hinh sinh) or (thanh tinh)) cua dung ((cong tan) or (cong tang)) toan ban*.