Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach kem
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
vi cuu » vi luu, vinh cuu

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 ky) OR (sach ty)) lang xa hoi. hieu ((ve cao) or (ve bao)) duc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) lang xa hoi. hieu ((ve cao) OR (ve bao)) duc va hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) lang xa hoi. hieu ((ve cao) or (ve bao)) duc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) lang xa hoi. hieu ((ve cao) or (ve bao)) duc va hanh vi cuu tre*.