Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang cau » nang cao, hang cau, nang dau
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
va tinh » may tinh
cua tre » cua te, cuu tre, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ly nang cau hoi. hieu van chao xu ((va tinh) or (van minh)) va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang cau hoi. hieu van chao xu ((va tinh) OR (van minh)) va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ly nang cau hoi. hieu van chao xu ((va tinh) or (van minh)) va ((cua tre) or (cua triet))*.