Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
cau phuc » cau truc, chau phu, huu phuc
sach ky » sach y, sach kem, sach hay
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac
di cau » da cau, diem cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ky) OR (sach ty))) OR (sac ky)) lang xa hoi. hieu ve cau phuc va hanh di cau theo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ky) OR (sach ty))) or (sac ky)) lang xa hoi. hieu ve cau phuc va hanh di cau theo~".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) OR (sach ty))) or (sac ky)) lang xa hoi. hieu ve cau phuc va hanh di cau theo*.