Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van dau » van dao, phan dau
duoc ma » duoc lam
ma hanh » va hanh, da hanh, na hanh
cua tre » cua te, cuu tre, cua triet
van da » van dao, van dan, van dam

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 san)) ky nang xa hoi. hieu ((van da) OR (van dau)) duoc ma hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat san)) ky nang xa hoi. hieu ((van da) OR (van dau)) duoc ma hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuat san)) ky nang xa hoi. hieu ((van da) OR (van dau)) duoc ma hanh dai cua tre*".