Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
xa hanh » xa thanh, xa khanh, va hanh
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky lang) OR (ky tang)) van hoi. hieu va cam tuc xa hanh ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky tang)) van hoi. hieu va cam tuc xa hanh ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky lang) OR (ky tang)) van hoi. hieu va cam tuc xa hanh ((vai cua) or (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) OR (ky tang)) van hoi. hieu va cam tuc xa hanh ((vai cua) or (lai cua)) tre*.