Perhaps you should try some spelling variations:
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
hoa dung » khoa dung, hoa duong, hoa dong
cong van » cong vang, cong san, song van
tan tap » toan tap, han tap, man tap
tan tat » ban tat, toan tap, toan tai

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