Perhaps you should try some spelling variations:
tru nang » tri nang, truc nano, thi nang
tra nang » thi nang, kha nang, da nang
hieu van » hieu va, thien van, lieu va
van giao » nang giao, toan giao, dan gian
te sach » toc sach
va danh » va dinh, va dan, va hanh
danh ca » dan ca, doanh cua, danh cho
ca cua » co cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tru nang) OR (tra nang)) xa hoi. hieu van giao duc va danh ca cua te~.
• Adding a wildcard symbol may retrieve word variants: te sach ((tru nang) or (tra nang)) xa hoi. hieu van giao duc va danh ca cua te*.