Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hanh vai » hanh vi, hanh va, hanh tai
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
y lang » o lang, _ lang, tay lang
luc 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: so sach y lang xa hoi. hieu qua cam ((luc va) or (duc va)) hanh vai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y lang xa hoi. hieu qua cam ((luc va) OR (duc va)) hanh vai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y lang xa hoi. hieu qua cam ((luc va) or (duc va)) hanh vai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: so sach y lang xa hoi. hieu qua cam ((luc va) or (duc va)) hanh vai ((cua triet) OR (su triet))*.