Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
thuc dan » thuc hanh, hoc dan, thuc vat
thuc van » thuc vat, thuc va, thuc hanh
vai cua » dai cua, hai cua, lai cua
sach lo » sach dao, sach doi, sach hoi
thi lan » thi hanh, thi nang, thi lien
thi van » thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
lo lang » o lang, so lang, le lang
cua tre » cua te, cuu tre, cua triet

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 lo lang xa hoi. ((thi van) or (thi lan)) nam ((thuc van) OR (thuc dan)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach lo lang xa hoi. ((thi van) OR (thi lan)) nam ((thuc van) OR (thuc dan)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach lo lang xa hoi. ((thi van) or (thi lan)) nam ((thuc van) OR (thuc dan)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach lo lang xa hoi. ((thi van) or (thi lan)) nam ((thuc van) OR (thuc dan)) hanh vai cua tre*.