Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang xa » song xa, lang xa, sang ma
hieu va » lieu va, hieu qua
cau duc » cao duc, cau luc, chu duc
va danh » va dinh, va hanh, dia danh
lai cua » dai cua, hai cua, lai chau
va cau » van cau, va cac, va dau
va dan » ca dan, va dao, va dau
cua te » cua tu

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 ky sang xa hoi. hieu va cau duc ((va danh) OR (va dan)) lai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang xa hoi. hieu va cau duc ((va danh) OR (va dan)) lai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang xa hoi. hieu va cau duc ((va danh) OR (va dan)) lai cua te*.