Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tinh lam » trinh lam, dinh lam, tinh lao
lam chat » luan chat, cao chat, ly chat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nam tuc » nam thuc, nam truc, nam tu
va tinh » may tinh
chat te » chat deo, chat tai, chat beo
tuc va » thuc va, truc va, tuc xa
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 ky nang ((x hoi) or (o hoi)). hieu van nam tuc va tinh lam chat te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (o hoi)). hieu van nam tuc va tinh lam chat te.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (o hoi)). hieu van nam tuc va tinh lam chat te*.