Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sang » chieu sach, chieu xanh, hieu lang
thinh chat » tinh chat, trinh chat, thinh phat
tinh dinh » trinh dinh, tinh ninh, tinh binh
lang cong » dang cong, bang cong, hang cong
tan thinh » van thinh, tien thinh, tai chinh
cong tan » cong tac, cong san, cong thanh
dinh va » dinh van, dinh ve, tinh va
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (chieu sang)) - tinh dinh va lang cong tan thinh chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sang)) - tinh dinh va lang cong tan thinh chat*.