Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va
xuc ban » duc ban, cuc ban, quoc ban
x hoi » o hoi, x ho, 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 ty nang ((x hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam xuc ban hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang ((x hoi) OR (xa hoi)). ((hieu ve) OR (hieu van)) cam xuc ban hanh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang ((x hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam xuc ban hanh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang ((x hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam xuc ban hanh lai chau tre*.