Perhaps you should try some spelling variations:
duong cong » luong cong, duong trong, trong cong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
ganh nang » nganh nong, van nang, sach nang
dung cong » dung trong
dang toan » dang tran, dan toan, dung toan
nang dua » nang du, nang suat, nang quan
toan cao » toan ban, toan tap

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 - ganh nang dua ((duong cong) or (dung cong)) dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ganh nang dua ((duong cong) OR (dung cong)) dang toan cao*.