Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
cua triet » cua viet, su triet, va triet
thanh gia » thanh giang, thanh nghia, tranh giai
thien van » thi van
tu sach » thu sach, su sach, te sach
nang xa » lang xa, nang ma, mang xa
nam luc » nang luc, nhan luc, nam thuc
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) OR (nang x)) hoi. thien van nam luc va ((thanh gia) or (thanh gian)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (nang x)) hoi. thien van nam luc va ((thanh gia) OR (thanh gian)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) OR (nang x)) hoi. thien van nam luc va ((thanh gia) or (thanh gian)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) OR (nang x)) hoi. thien van nam luc va ((thanh gia) or (thanh gian)) cua triet*.