Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
thanh lap » thanh san, phan lap, thanh van
sach thu » sach thue, sach thieu, sach tham
sach ty » sach y, sach tu, xach tay
bac dai » bach mai
dai va » mai va
va bac » van bac, va cac, va bai
x hoi » xa hoi, o hoi, x ho

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 ty) OR (sach thu)) nang x hoi. lieu va bac dai va ((thanh lap) or (thanh hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang x hoi. lieu va bac dai va ((thanh lap) OR (thanh hai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach thu)) nang x hoi. lieu va bac dai va ((thanh lap) or (thanh hai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach thu)) nang x hoi. lieu va bac dai va ((thanh lap) or (thanh hai)) cua triet*.