Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chat cua
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, hieu van
o hoi » co hoi, o hoc, o hai

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 ((o hoi) or (xa hoi)). hieu ve ((chat xuc) OR (chao xu)) ban hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang ((o hoi) OR (xa hoi)). hieu ve ((chat xuc) OR (chao xu)) ban hanh lai chau tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang ((o hoi) or (xa hoi)). hieu ve ((chat xuc) OR (chao xu)) ban hanh lai chau tre*".