Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 cua ((((nhung cong) or (bang cong))) or (thong thong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh cua ((((nhung cong) OR (bang cong))) OR (thong thong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua ((((nhung cong) or (bang cong))) or (thong thong)) dan toan cao*.