Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
dam thuc » am thuc, dan thuc, nam thuc
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cam tu » cam thu, nam tu, dam tu
va cua » va chua, via cua, ca cua
cua te » cua tu

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 xa hoi. hieu ve ((dam thuc) or (cam tu)) va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat lanh)) ky nang xa hoi. hieu ve ((dam thuc) OR (cam tu)) va hanh va cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat lanh)) ky nang xa hoi. hieu ve ((dam thuc) or (cam tu)) va hanh va cua te*.