Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hang hang » nang hang, cang thang, hung thang
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong suc » cong thuc, cong suat, cong chuc
suc va » duc va, tuc va, luc va
va ban » van ban, va bai, va bao

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 - hang hang ((cua dung) or (cua dang)) cong suc va ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hang hang ((cua dung) OR (cua dang)) cong suc va ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hang hang ((cua dung) or (cua dang)) cong suc va ban*.