Perhaps you should try some spelling variations:
trinh phan » trinh quan, thanh phan, trinh toan
hoa chinh » hoan chinh, hoa hinh, hoc chinh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
trinh han » trinh quan
ho chinh » hoc chinh, cho chinh, do chinh
cua hang » cua dang, cua nhung, cua cong

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 (hoa chinh)) sach - canh tranh cua hang cong ((trinh phan) or (trinh han)) lan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hoa chinh)) sach - canh tranh cua hang cong ((trinh phan) OR (trinh han)) lan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) OR (hoa chinh)) sach - canh tranh cua hang cong ((trinh phan) or (trinh han)) lan".
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) OR (hoa chinh)) sach - canh tranh cua hang cong ((trinh phan) or (trinh han)) lan*.