Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
xa khanh » xa thanh, van khanh, dat khanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
xa hanh » xa thanh, va hanh, da hanh
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
va nam » van nam, ha nam, va nay

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 nang xa hoi. lieu va nam thuc ((xa hanh) OR (xa khanh)) ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va nam thuc ((xa hanh) OR (xa khanh)) ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu va nam thuc ((xa hanh) OR (xa khanh)) ((vai cua) or (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va nam thuc ((xa hanh) OR (xa khanh)) ((vai cua) or (lai cua)) tre*.