Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thuat sach » thuat lanh, thuat san
hanh trinh » canh tranh, hanh chinh
hoc thuat » hoc thuyet, hoc thuc, hoc chat
tran manh » tran minh, tran thanh, tran van
cong dan » cong san, cong tan, huong dan
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 thuat sach - hanh trinh luat thuong cong dan ((thanh san) or (tran manh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuat sach - hanh trinh luat thuong cong dan ((thanh san) OR (tran manh)).
• Adding a wildcard symbol may retrieve word variants: hoc thuat sach - hanh trinh luat thuong cong dan ((thanh san) or (tran manh))*.