Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
thi nang » thi cong, ki nang, thi hanh
hieu van » hieu va, thien van, lieu va
tra nang » kha nang, da nang, va nang
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
van cam » van nam, van lam, van cau
tu nano » truc nano
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua

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 ((tu nano) or (((thi nang) or (tra nang)))) xa hoi. hieu van cam xuc ban thanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nano) OR (((thi nang) OR (tra nang)))) xa hoi. hieu van cam xuc ban thanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nano) or (((thi nang) or (tra nang)))) xa hoi. hieu van cam xuc ban thanh vi luu tre*.