Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
tang luan » dung luan
cong chuc » cong cu, cong cua
cong thuc » cong tac
ho chieu » theo chieu, hoc thieu, doi chieu
tang cua » mang cua, hang cua, thong cua
toan ban » van ban

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