Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tu cach » tu cac
hanh de » hanh ve, hanh kem
nang ma » tang ma, sang ma, nang cao
hanh di » hanh vi, hang di, danh di
nam tuc » nam thuc, nam truc, nam tu
va nam » van nam, ha nam, va nay
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky nang ma hoi. lieu va nam tuc va ((hanh di) OR (hanh de)) cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky nang ma hoi. lieu va nam tuc va ((hanh di) OR (hanh de)) cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky nang ma hoi. lieu va nam tuc va ((hanh di) OR (hanh de)) cua vat".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky nang ma hoi. lieu va nam tuc va ((hanh di) OR (hanh de)) cua vat*.