Perhaps you should try some spelling variations:
thanh tung » thanh cong
phap thong » phap phong, phap chong, pho thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
tung phap » tung pham, tieng phap, trung phan
doc hieu » toc thieu, hoc thieu, hoc hien
song van » hoang van, trong van, duong van
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - thanh tung phap thong ((song van) or (cong san)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh tung phap thong ((song van) OR (cong san)) phan tu.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh tung phap thong ((song van) or (cong san)) phan tu*.