Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
tieu sach » chieu sach, dien sach, te sach
nang cong » nang song, dang cong, bang cong
thang va » hang va, trang va, thong va
tran van » luan van
va nang » van nang, da nang, cam nang
tan van » tang van, luan van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - nhanh thang va nang cong ((tan van) or (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - nhanh thang va nang cong ((tan van) OR (tran van)) ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - nhanh thang va nang cong ((tan van) or (tran van)) ban*.