Perhaps you should try some spelling variations:
dan lien » danh lien, van lien, dan vien
lien duc » lien tuc, dien duc, tien duc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
qua cua » quan cua, quang cua, qua quan
qua hai » qua hoat
duc tre » duoc tren, duc tien
nang o » nang co, nang ho, nang ro
va dan » ca dan, va dao, va dau
o hoi » co hoi, o hoc, o hai

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 o hoi. hieu ((qua cua) or (qua hai)) duc va dan lien duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang o hoi. hieu ((qua cua) OR (qua hai)) duc va dan lien duc tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang o hoi. hieu ((qua cua) or (qua hai)) duc va dan lien duc tre*.