Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
cau tre » cau tren, cau treo, cau tra
tuc va » thuc va, truc va, tuc xa
va anh » van anh, va danh, va hanh
anh va » hanh va
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang ((x hoi) or (x ho)). ((hieu ve) OR (hieu va)) cam tuc va anh va cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ((x hoi) OR (x ho)). ((hieu ve) OR (hieu va)) cam tuc va anh va cau tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang ((x hoi) or (x ho)). ((hieu ve) OR (hieu va)) cam tuc va anh va cau tre*".