Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trang » thanh trung, canh tranh, hanh trinh
trang xay » trong xay, trang xa, trang va
dung cong » dung trong
cong van » cong vang, cong san, song van
toan ban » van ban
tan ban » tang ban, van ban, can 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) or (chieu sach)) - hanh trang xay dung cong van ((tan ban) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - hanh trang xay dung cong van ((tan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - hanh trang xay dung cong van ((tan ban) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - hanh trang xay dung cong van ((tan ban) OR (toan ban))*.