Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
cac thuc » cac thu, can thuc, cay thuc
thai cua » than cua, tai cuc, tri cua
so sach » so sanh, bo sach, co sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hai cua » dai cua, hoi cua, lai cua

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 ly hang xa hoi. hieu va ((cac thuc) or (cach thuc)) va hanh ((hai cua) or (thai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly hang xa hoi. hieu va ((cac thuc) OR (cach thuc)) va hanh ((hai cua) OR (thai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: so sach ly hang xa hoi. hieu va ((cac thuc) or (cach thuc)) va hanh ((hai cua) or (thai cua)) triet*.