Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
dang van » hoang van, hang va

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) or (hieu manh)) - hanh ((tang cua) OR (mang cua)) dung cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - hanh ((tang cua) OR (mang cua)) dung cong dang van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu manh)) - hanh ((tang cua) OR (mang cua)) dung cong dang van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - hanh ((tang cua) OR (mang cua)) dung cong dang van ban*.