Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
van cua » vang cua, ban cua, dan cua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho
o hai » co hai, so hai, o lai

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 van cua viet~.
• 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 van cua viet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((x hoi) or (o hai)). hieu va cam xuc va thanh van cua viet*.