Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
cuc ban » cua ban, cac ban, cuu ban
vi cua » vai cua, di cua
cua te » cua tu
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: tu sach tru nang x hoi. thien ((van nam) or (van cau)) cuc ban hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tru nang x hoi. thien ((van nam) OR (van cau)) cuc ban hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach tru nang x hoi. thien ((van nam) or (van cau)) cuc ban hanh vi cua te*.