Perhaps you should try some spelling variations:
dien duc » dien cuc, dien luc, tien duc
lien duc » lien tuc, tien duc, bien duoc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
qua hai » qua hoat
qua cua » quan cua, quang cua, qua quan
nang ro » nang co, nang ho, nang ra
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
ro hoi » co hoi, o hoi, mo hoi

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 ro hoi. hieu ((qua cua) or (qua hai)) xuc va dan ((lien duc) OR (dien duc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ro hoi. hieu ((qua cua) OR (qua hai)) xuc va dan ((lien duc) OR (dien duc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ro hoi. hieu ((qua cua) or (qua hai)) xuc va dan ((lien duc) OR (dien duc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ro hoi. hieu ((qua cua) or (qua hai)) xuc va dan ((lien duc) OR (dien duc)) tre*.