Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sach » chinh sach, chiet tach, chieu sang
thinh chat » tinh chat, trinh chat, thinh phat
tinh sinh » tinh ninh, tinh binh, tinh hinh
hang cong » dang cong, hang nong, bang cong
tan thinh » van thinh, tien thinh, tai chinh
cong tan » cong tac, cong san, cong thanh
sinh va » sinh vat, tinh va, dinh van
va hang » van hang, va nang, va 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 sach)) - tinh sinh va hang cong tan thinh chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sach)) - tinh sinh va hang cong tan thinh chat*.