Perhaps you should try some spelling variations:
dien cac » dien cuc, dien sach, dien va
danh hai » dang hai, lanh hai, manh hai
vien cac » vien bach, vien dai, vien da
hai cua » thai cua, dai cua, hoi cua
va danh » va dinh, va dan, va hanh
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
lo va » lo van, lao va, ly va

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)) nang xa hoi. hieu ((dien cac) or (vien cac)) lo va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ((dien cac) OR (vien cac)) lo va danh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ((dien cac) or (vien cac)) lo va danh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ((dien cac) or (vien cac)) lo va danh hai cua tre*.