Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y lang xa hoi. hieu qua cam xuc va ((hanh vi) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y lang xa hoi. hieu qua cam xuc va ((hanh vi) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y lang xa hoi. hieu qua cam xuc va ((hanh vi) or (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y lang xa hoi. hieu qua cam xuc va ((hanh vi) or (hanh tai)) cua tre*.