Perhaps you should try some spelling variations:
hieu cac » hieu luc, hieu va, hieu van
van tuan » van quan, van ban, anh tuan
sach thu » sach thue, sach thieu, sach tham
hieu cao » chieu cao, hieu ca, kieu cao
chat xuc » chat huu, cam xuc, chao xu
tuan vi » quan vi, luan vi, quans vi
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
vi cua » vai cua, di cua

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 ty) OR (sach thu)) lang xa hoi. ((hieu cao) or (hieu cac)) chat xuc van tuan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach thu)) lang xa hoi. ((hieu cao) OR (hieu cac)) chat xuc van tuan vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach thu)) lang xa hoi. ((hieu cao) or (hieu cac)) chat xuc van tuan vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach thu)) lang xa hoi. ((hieu cao) or (hieu cac)) chat xuc van tuan vi cua tre*.