Perhaps you should try some spelling variations:
hoan chinh » hanh chinh, hoa hinh
hanh trinh » canh tranh, hanh chinh
luat cong » thuat cong, luat chung, cua cong
cong cong » cong dong, trong cong, dung cong
dan khanh » dang khanh, van khanh, dan hanh
dat khanh » van khanh, duy khanh
ho chinh » hoc chinh, cho chinh, hoa chinh

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 (hoan chinh)) sach - hanh trinh luat cong cong ((dan khanh) OR (dat khanh)) ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hoan chinh)) sach - hanh trinh luat cong cong ((dan khanh) OR (dat khanh)) ap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) or (hoan chinh)) sach - hanh trinh luat cong cong ((dan khanh) OR (dat khanh)) ap*".