Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong dong, truong cong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trinh » canh tranh, hanh chinh
thuong con » thuong dong, truong cong, thong cong
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
luat » luan, xuat

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

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