Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cong tinh » cong trinh, cong vinh, long tinh
hieu cac » hieu luc, hieu va, hieu van
cua hang » cua dang, cua nhung, cua cong
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (hieu cac)) - canh tranh cua hang cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu cac)) - canh tranh cua hang cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu cac)) - canh tranh cua hang cong tinh toan cao*.