Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
manh hai » lanh hai, minh hai, thanh hai
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
anh hai » lanh hai, anh thai, anh bai
xuc ban » duc ban, cuc ban, quoc ban
qua cac » cua cac
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
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: su sach ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ban ((anh hai) OR (manh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (lang van)) hoi. hieu qua cac xuc ban ((anh hai) OR (manh hai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ban ((anh hai) OR (manh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ban ((anh hai) OR (manh hai)) cua tre*.