Perhaps you should try some spelling variations:
sach tham » sach nha
tham xang » tham lang, nham nang, pham hang
cach thuc » anh thuc, cac thu
su triet » su viet, su tien, ve triet
thanh vi » thanh va, thanh ve, nhanh vi
hieu van » hieu va, thien van, lieu va
hieu ve » hieu va
su sach » so sach, vu sach
xang x » nang x

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 tham xang x ho. ((hieu ve) OR (hieu van)) cach thuc vat ((thanh vi) or (hanh vi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tham xang x ho. ((hieu ve) OR (hieu van)) cach thuc vat ((thanh vi) OR (hanh vi)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tham xang x ho. ((hieu ve) OR (hieu van)) cach thuc vat ((thanh vi) or (hanh vi)) su triet".
• Adding a wildcard symbol may retrieve word variants: su sach tham xang x ho. ((hieu ve) OR (hieu van)) cach thuc vat ((thanh vi) or (hanh vi)) su triet*.