Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
can tranh » tan tran, van ranh, co tranh
dung cong » dung trong
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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 tranh) or (can tranh)) hoc ((nhung cong) OR (dung cong)) van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh tranh) OR (can tranh)) hoc ((nhung cong) OR (dung cong)) van tan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh tranh) or (can tranh)) hoc ((nhung cong) OR (dung cong)) van tan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh tranh) or (can tranh)) hoc ((nhung cong) OR (dung cong)) van tan tap*.