Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thai tuc » thai thuc, thai thuy, thai hoc
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
va thai » van thai, va tai, va tham
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, dua tren
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ky) OR (sach y)) nang xa hoi. lieu va thai tuc va danh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sach y)) nang xa hoi. lieu va thai tuc va danh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sach y)) nang xa hoi. lieu va thai tuc va danh vi ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sach y)) nang xa hoi. lieu va thai tuc va danh vi ((cua tre) or (cua triet))*.