Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoi chieu » doi chieu, ho chieu, hai chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
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: hoi chieu sang - hanh tranh cua nhung ((cong san) or (huong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi chieu sang - hanh tranh cua nhung ((cong san) OR (huong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoi chieu sang - hanh tranh cua nhung ((cong san) or (huong dan)) toan cao*.