Perhaps you should try some spelling variations:
doanh cua » doanh luan
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
xach tay » canh tay
danh ca » dan ca, danh cho, danh gia
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
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: tu ((xach tay) or (sach y)) nang xa hoi. hieu vien cac xuc va ((danh ca) OR (doanh cua)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((xach tay) OR (sach y)) nang xa hoi. hieu vien cac xuc va ((danh ca) OR (doanh cua)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((xach tay) or (sach y)) nang xa hoi. hieu vien cac xuc va ((danh ca) OR (doanh cua)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((xach tay) or (sach y)) nang xa hoi. hieu vien cac xuc va ((danh ca) OR (doanh cua)) cua tre*.