Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cach dung » sach dung, cach mang, tac dung
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
dung cua » dung luan, dung cho
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 - cach dung cua ((tong cong) or (dung cong)) ((dan than) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - cach dung cua ((tong cong) OR (dung cong)) ((dan than) OR (van than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - cach dung cua ((tong cong) or (dung cong)) ((dan than) or (van than)) cau*.