Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
dung chung » dung cong, dung ung, dung trung
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, doi chieu

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 sang - hanh tranh cua ((dung chung) or (nhung cong)) dan ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh tranh cua ((dung chung) OR (nhung cong)) dan ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh tranh cua ((dung chung) or (nhung cong)) dan ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh tranh cua ((dung chung) or (nhung cong)) dan ((toan ban) OR (van ban))*.