Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh tran » canh tranh, hanh trang, banh trang
tdung dat » trung dai, vung dat, dong dat
tran van » luan van
van dung » van dong, xay dung, tin dung
dung dat » dung va, dung tai
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - canh tran van dung ((tdung dat) or (dung dat)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh tran van dung ((tdung dat) OR (dung dat)) phan dau.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - canh tran van dung ((tdung dat) or (dung dat)) phan dau*.