Perhaps you should try some spelling variations:
nguoi sach » nguoi san, nuoc sach
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cac bo » bac bo, cac co
bo van » vo van, so van, do van
anh va » hanh va
va cua » va chua, via cua, ca cua

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) or (nguoi sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cac bo van anh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (nguoi sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cac bo van anh va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (nguoi sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cac bo van anh va cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (nguoi sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cac bo van anh va cua triet*.