Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty hang, ly nang
qua cao » qua cac, qua ca, qua cai
cao suc » cao su, cao duc
va danh » va dinh, va dan, va hanh
danh de » hanh de, dan de, dang de
cua tre » cua te, cuu tre, cua triet
suc va » duc va, tuc va, luc va
de cua » le cua, te cua, dieu cua
x hoi » xa hoi, o hoi, x ho

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 ((ty nang) OR (ty xang)) x hoi. hieu qua cao suc va danh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty xang)) x hoi. hieu qua cao suc va danh de cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) x hoi. hieu qua cao suc va danh de cua tre*.