Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vat thanh » dat thanh, gat thanh, tat thanh
cac thuc » cach thuc, cac thu, can thuc
thanh di » thanh doi, thanh de, thanh do
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky nang ((x hoi) OR (o hoi)). hieu va cac thuc vat thanh di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang ((x hoi) OR (o hoi)). hieu va cac thuc vat thanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: co sach ky nang ((x hoi) OR (o hoi)). hieu va cac thuc vat thanh di cua triet*.