Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
thu sach » tu sach, thuat sach, thuoc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van cua » vang cua, ban cua, dan cua
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
o hai » co hai, so hai, o lai
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: thu sach ty nang ((x hoi) or (o hai)). hieu va cam xuc ((va thanh) OR (ban thanh)) van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((x hoi) OR (o hai)). hieu va cam xuc ((va thanh) OR (ban thanh)) van cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((x hoi) or (o hai)). hieu va cam xuc ((va thanh) OR (ban thanh)) van cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((x hoi) or (o hai)). hieu va cam xuc ((va thanh) OR (ban thanh)) van cua triet*.