Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tuan bang » tuan dang, tuan hoang, thuat bang
bang nong » hang nong, bang song, bang cong
nong tac » cong tac, dong tac, nong tan
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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 - ((thanh san) or (thanh pho)) tuan bang nong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((thanh san) OR (thanh pho)) tuan bang nong tac toan tap*.