Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
cua triet » cua viet, su triet, va triet
cam truc » cau truc, nam truc, lam truoc
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
va cam » va cham, va cac, va cao
cua te » cua tu
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: thuat sac ky nang o hoi. lieu va cam truc va hanh va ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang o hoi. lieu va cam truc va hanh va ((cua triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang o hoi. lieu va cam truc va hanh va ((cua triet) or (cua te))*.