Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thanh thang » nhanh thang, thanh thanh, thanh hang
hanh thang » nhanh thang, hanh trang, danh thang
tieu xanh » tieu danh, chieu xanh, dieu hanh
va phuong » va thuong, cac phuong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((hanh thang) or (thanh thang)) va phuong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh thang) OR (thanh thang)) va phuong cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh thang) or (thanh thang)) va phuong cong tan van ban*.