Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
hanh mang » nhanh mang, nhanh lang, thanh hang
nhanh cau » nhanh cay, nhanh ha, hang cau
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien chinh sach - ((hanh mang) or (hanh trang)) va nhung cong ban ((nhanh cau) OR (thanh chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien chinh sach - ((hanh mang) OR (hanh trang)) va nhung cong ban ((nhanh cau) OR (thanh chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien chinh sach - ((hanh mang) or (hanh trang)) va nhung cong ban ((nhanh cau) OR (thanh chau))".
• Adding a wildcard symbol may retrieve word variants: thien chinh sach - ((hanh mang) or (hanh trang)) va nhung cong ban ((nhanh cau) OR (thanh chau))*.