Perhaps you should try some spelling variations:
doanh chung » doanh nhung, doanh thuong, doan hung
hoc thieu » toc thieu
thi nhung » thi nang, thi hong, thi huong
tu nhung » tu chung, cua nhung, tu vung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van 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 hien) or (hoc thieu)) xanh - doanh chung ((tu nhung) OR (thi nhung)) cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) xanh - doanh chung ((tu nhung) OR (thi nhung)) cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (hoc thieu)) xanh - doanh chung ((tu nhung) OR (thi nhung)) cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) xanh - doanh chung ((tu nhung) OR (thi nhung)) cong dan toan ban*.