Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
chat xuc » chat huu, cam xuc, chao xu
xuc ngan » luc ngan, luc nganh, vu ngan
tu sach » su sach, te sach, tu cach
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
cu tren » tu tren, dua tren
x hoi » xa hoi, o hoi, 5 hoi
va cu » va cau, va chu, va su
hang » dang, bang, hanh

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) or (thu sach)) ty nang ((x hoi) or (x ho)). hieu ve chat xuc ngan hang va cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty nang ((x hoi) OR (x ho)). hieu ve chat xuc ngan hang va cu tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ty nang ((x hoi) or (x ho)). hieu ve chat xuc ngan hang va cu tren*.