Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thang song » thang long, thang trong, thanh cong
trinh vat » trinh van, trinh luat, sinh vat
tuan bang » tuan dang, tuan hoang, thuat bang
song van » hoang van, trong van, duong van
van tuan » van quan, van ban, anh tuan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) OR (chinh sach)) - hanh ((trinh vat) or (tich va)) thang song van tuan bang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chinh sach)) - hanh ((trinh vat) OR (tich va)) thang song van tuan bang.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chinh sach)) - hanh ((trinh vat) or (tich va)) thang song van tuan bang".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chinh sach)) - hanh ((trinh vat) or (tich va)) thang song van tuan bang*.