Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
manh hai » lanh hai, minh hai, van hai
lang cay » lang cao, lang chai, hang ca
sach tay » xach tay, sach hay, sach nay
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tay ((lang cay) OR (nang cao)) phoi. hieu ve cam xuc va ((manh hai) or (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay ((lang cay) OR (nang cao)) phoi. hieu ve cam xuc va ((manh hai) OR (thanh hai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tay ((lang cay) OR (nang cao)) phoi. hieu ve cam xuc va ((manh hai) or (thanh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach tay ((lang cay) OR (nang cao)) phoi. hieu ve cam xuc va ((manh hai) or (thanh hai)) cua tre*.