Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
chang xu » chang xue, chao xu, thong xu
cap nuoc » dat nuoc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ve cap » ve cac, le cap, ve cai
hang x » nang x, hoang xa, hang nxb

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 ((hang x) or (chang xu)) hoi. hieu ve cap nuoc va ((thanh vi) OR (thanh ve)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((hang x) OR (chang xu)) hoi. hieu ve cap nuoc va ((thanh vi) OR (thanh ve)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((hang x) or (chang xu)) hoi. hieu ve cap nuoc va ((thanh vi) OR (thanh ve)) ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((hang x) or (chang xu)) hoi. hieu ve cap nuoc va ((thanh vi) OR (thanh ve)) ve triet*.