Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
dung tuong » dung thuong, dung truong, dung trong
tran vant » tran viet, tan van, tran vinh
tuong tac » cong tac, luong tai, tuong lai
tran van » luan van
tac van » tac vang, cac van, tac va

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