Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, qua cua
lien cuc » dien cuc, vien cac, dien cac
lien tuc » kien thuc, kien truc, dien tu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
nang o » nang co, nang ho, nang ro
xuc va » duc va, tuc va, luc va
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 cham) or (va cham)) xuc va van ((lien cuc) OR (lien tuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang o hoi. hieu ((qua cham) OR (va cham)) xuc va van ((lien cuc) OR (lien tuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang o hoi. hieu ((qua cham) or (va cham)) xuc va van ((lien cuc) OR (lien tuc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang o hoi. hieu ((qua cham) or (va cham)) xuc va van ((lien cuc) OR (lien tuc)) tre*.