Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
chu xanh » chu manh, chieu xanh, chua xang
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan tap » toan tap, tuan tai, tuyen tap
va bang » va nang, va lang, va hang
va ban » van ban, va bai, va bao

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

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