Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
doc sach » hoc sach, toc sach, nuoc sach
hanh hai » thanh hai, hang hai, hanh tai
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
xuc va » duc va, tuc va, luc va
qua ca » qua cac, qua cua, qua cai
ca xuc » cam xuc, chat xuc

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 (doc sach)) ty hang xa hoi. hieu qua ca xuc va ((hanh hai) OR (nhanh hai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (doc sach)) ty hang xa hoi. hieu qua ca xuc va ((hanh hai) OR (nhanh hai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (doc sach)) ty hang xa hoi. hieu qua ca xuc va ((hanh hai) OR (nhanh hai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (doc sach)) ty hang xa hoi. hieu qua ca xuc va ((hanh hai) OR (nhanh hai)) cuu tre*.