Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » thien van, lieu va, hieu ve
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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 van) OR (hieu va)) cam xuc va thanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat lanh)) ky nang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh dai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuat lanh)) ky nang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh dai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat lanh)) ky nang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh dai cuu tre*.