Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
tranh cua » manh cua
doanh cua » doanh luan
cong tac » cong ty
tac han » tac nhan, tac ha, tac can
han tu » phan tu, hanh tu, ban tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) or (chieu sach)) - canh ((tranh cua) or (doanh cua)) thong cong tac han tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - canh ((tranh cua) OR (doanh cua)) thong cong tac han tu.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - canh ((tranh cua) or (doanh cua)) thong cong tac han tu*.