Perhaps you should try some spelling variations:
tuan tuoi » lua tuoi, sua tuoi
tuan tue » tuan tu, quang tue, tuan tien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
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: te sach ky nang xa hoi. ((hieu va) or (hieu qua)) cam luc van ((tuan tue) OR (tuan tuoi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. ((hieu va) OR (hieu qua)) cam luc van ((tuan tue) OR (tuan tuoi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((hieu va) or (hieu qua)) cam luc van ((tuan tue) OR (tuan tuoi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((hieu va) or (hieu qua)) cam luc van ((tuan tue) OR (tuan tuoi)) cua tre*.