Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
theo chu » theo chieu, cho chu, theo yeu
chao chu » cho chu, cua chu, cao cho
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

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