Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong luong » cong thuong, nang luong, cong dong
trinh cua » trinh luat, trinh quan, trinh luan
luong dao » duong dao, truong dao, luong giao
tinh cua » sinh cua, tinh chat, tranh cua
dao toan » bao toan, dan toan, dao hoan
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 xanh) or (chieu sang)) - hanh ((trinh cua) OR (tinh cua)) cong luong dao toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - hanh ((trinh cua) OR (tinh cua)) cong luong dao toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - hanh ((trinh cua) OR (tinh cua)) cong luong dao toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - hanh ((trinh cua) OR (tinh cua)) cong luong dao toan ban*.