Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vien cac » vien bach, vien dai, vien da
lang xa » lang ha, dang xay, lang van
anh via » anh bia, anh viet, anh giao
cua tre » cua te, cuu tre, cua triet
ve cac » va cac
y lang » o lang, _ lang, tay lang
do van » dao van, vo van, so van
anh va » hanh va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y lang xa hoi. hieu ((ve cac) OR (vien cac)) do van ((anh via) or (anh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y lang xa hoi. hieu ((ve cac) OR (vien cac)) do van ((anh via) OR (anh va)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y lang xa hoi. hieu ((ve cac) OR (vien cac)) do van ((anh via) or (anh va)) cua tre*".