Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
pham duy » pham duc
qua pham » quan pham, quy pham, qua cham
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
duy va » duy vat, duy van, day va
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hoa
o hai » co hai, so hai, o lai

You may be able to get more results by adjusting your search query.

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