Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
va cham » va chat, va tham
duoc va » nuoc va, duc va, duoc ma
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
nang o » nang co, nang ho, nang ro
y nang » ky nang, ly nang, v nang
loc va » hoc va, luc va
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: thu sach y nang o hoi. lieu va cham ((duoc va) or (loc va)) ((hanh di) or (hang di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang o hoi. lieu va cham ((duoc va) OR (loc va)) ((hanh di) OR (hang di)) cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang o hoi. lieu va cham ((duoc va) or (loc va)) ((hanh di) or (hang di)) cua triet*.