Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
dao van » dang van
do van » vo van, so van

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 - hanh tranh va ((nhung cong) OR (dung cong)) ((do van) or (dao van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh va ((nhung cong) OR (dung cong)) ((do van) OR (dao van)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tranh va ((nhung cong) OR (dung cong)) ((do van) or (dao van)) ban*".