Perhaps you should try some spelling variations:
chong cong » thong cong, cuong cong, phong cong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh luat » nganh luat, hang luan, hanh lam
cong cong » cong dong, trong cong, dung cong
luat van » luan van, luat dan, luat va
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh luat van ((chong cong) OR (cong cong)) dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh luat van ((chong cong) OR (cong cong)) dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh luat van ((chong cong) OR (cong cong)) dan ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh luat van ((chong cong) OR (cong cong)) dan ((toan cau) or (toan ban))*.