Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
canh ban » can ban, canh dan, doanh ban
canh van » anh van, can van, cach van
san toan » van toan, dan toan, 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 thieu xanh - ((canh ban) or (canh van)) quan ((nhung cong) OR (hang cong)) san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh ban) OR (canh van)) quan ((nhung cong) OR (hang cong)) san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh ban) or (canh van)) quan ((nhung cong) OR (hang cong)) san toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh ban) or (canh van)) quan ((nhung cong) OR (hang cong)) san toan ban*.