Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
trinh chan » trinh chuan, trinh han, trinh phan
hoc thieu » toc thieu, hoc hien
tranh cua » manh cua
doanh cua » doanh luan
chan tu » phan tu, han tu, chon tu

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