Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
canh trinh » canh tranh, hanh trinh, canh tinh
hung luong » hung vuong, dung luong, hang luong
thien toan » thien thanh, thien van, thien tai
trinh va » trinh van, trinh vat, trinh ve
va hung » va nhung, van hung, va huong

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 sach) OR (chieu sang)) - canh trinh va hung luong ((thien toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - canh trinh va hung luong ((thien toan) OR (tinh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - canh trinh va hung luong ((thien toan) or (tinh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - canh trinh va hung luong ((thien toan) or (tinh toan)) cau*.