Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
luu tre » luu tru, cuu tre, luy tre
ve cam » ve cham, ve cac, va cam
vi luu » vi lua
x hoi » xa hoi, x ho, 5 hoi
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) or (thuat lanh)) ky nang ((x hoi) or (o hoi)). hieu ve cam tuc van hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat lanh)) ky nang ((x hoi) OR (o hoi)). hieu ve cam tuc van hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat lanh)) ky nang ((x hoi) or (o hoi)). hieu ve cam tuc van hanh vi luu tre*.