Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hanh di » hanh vi, hanh de, hang di
uoc va » nuoc va, duoc va, quoc va
loc va » hoc va, luc va
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, 5 hoi

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 ly nang ((x hoi) OR (x ho)). lieu va phat ((uoc va) or (loc va)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly nang ((x hoi) OR (x ho)). lieu va phat ((uoc va) OR (loc va)) hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ly nang ((x hoi) OR (x ho)). lieu va phat ((uoc va) or (loc va)) hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ly nang ((x hoi) OR (x ho)). lieu va phat ((uoc va) or (loc va)) hanh di cua triet*.