Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
tang cuong » nang luong
cuong dung » tuong duong, ung dung, thong dung
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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)) - anh tang cuong dung cong dan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - anh tang cuong dung cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - anh tang cuong dung cong dan than cap*.