Perhaps you should try some spelling variations:
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
sach ty » sach tu, sach thu, xach tay
lua tre » cua tre, luy tre, dua tren
ve bao » te bao, va bao
vi lua » vi luu
ve cao » va cao, ve cac, ve co
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 ty) OR (sach y)) nang x hoi. hieu ((ve cao) or (ve bao)) duc va danh vi lua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cao) OR (ve bao)) duc va danh vi lua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cao) or (ve bao)) duc va danh vi lua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cao) or (ve bao)) duc va danh vi lua tre*.