Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
cong danh » cuong danh, cong dan, cong khanh
ho chinh » hoc chinh, cho chinh, hoa chinh
tuan tai » toan tai, quan tai, tan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chinh) or (hanh chinh)) sach - hanh tranh cua trong ((cong danh) OR (cong thanh)) tuan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hanh chinh)) sach - hanh tranh cua trong ((cong danh) OR (cong thanh)) tuan tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) or (hanh chinh)) sach - hanh tranh cua trong ((cong danh) OR (cong thanh)) tuan tai".
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) or (hanh chinh)) sach - hanh tranh cua trong ((cong danh) OR (cong thanh)) tuan tai*.