Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
quoc ban » quoc bao, quoc lan, quoc quan
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
cuc ban » cua ban, cac ban, cuu ban
ve cac » va cac, vien cac

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 thi hanh xa hoi. hieu ve cac ((cuc ban) or (quoc ban)) thanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi hanh xa hoi. hieu ve cac ((cuc ban) OR (quoc ban)) thanh dai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach thi hanh xa hoi. hieu ve cac ((cuc ban) or (quoc ban)) thanh dai cua viet*.