Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
nhan luc » nang luc
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
su sach » vu sach
lai cua » dai cua, hai cua, lai chau
so sach » so sanh, bo sach, co sach
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ty xang xa hoi. ((hieu ve) OR (hieu van)) nhan luc va thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty xang xa hoi. ((hieu ve) OR (hieu van)) nhan luc va thanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty xang xa hoi. ((hieu ve) OR (hieu van)) nhan luc va thanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty xang xa hoi. ((hieu ve) OR (hieu van)) nhan luc va thanh lai cua te*.