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
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, va dan, va hanh
sai cua » hai cua, bai cua, mai cua
lai cua » hai cua, lai chau, thai cua
va cam » va cham, va cac, va cao
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: te sach ky sang xa hoi. hieu va cam tuc va danh ((((sai cua) or (lai cua))) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang xa hoi. hieu va cam tuc va danh ((((sai cua) OR (lai cua))) OR (dai cua)) te.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang xa hoi. hieu va cam tuc va danh ((((sai cua) or (lai cua))) or (dai cua)) te*.