Perhaps you should try some spelling variations:
dang chinh » hang chinh, dang hinh, dung chinh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
tong cong » trong cong, cong cong, dang cong
ho chieu » theo chieu, doi chieu, mot chieu
chinh ca » chinh ta, chinh va, chinh 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 chieu) or (hoc thieu)) sach - canh tranh cua ((dung cong) or (tong cong)) dang chinh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - canh tranh cua ((dung cong) OR (tong cong)) dang chinh ca.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - canh tranh cua ((dung cong) or (tong cong)) dang chinh ca*.