Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu xanh » chieu sach, chieu sang, chieu tinh
doc chieu » doc hieu, doi chieu, toc thieu
dung cua » dung luan, dung cho
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu xanh - hanh ((dung cua) or (manh cua)) phuong cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu xanh - hanh ((dung cua) OR (manh cua)) phuong cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: doc chieu xanh - hanh ((dung cua) or (manh cua)) phuong cong dan than tap*.