Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ve triet » va trien, su triet
cac thuc » cach thuc, cac thu, can thuc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
ly nang » ky nang, ly hang, ly vang
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly nang xa hoi. ((hieu ve) or (hieu va)) cac thuc va hanh di ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. ((hieu ve) OR (hieu va)) cac thuc va hanh di ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. ((hieu ve) or (hieu va)) cac thuc va hanh di ((cua triet) or (ve triet))*.