Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, va trien, ve triet
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
danh vi » hanh vi, dinh vi, danh di
xuc va » tuc va, luc va, xac va
vi va » vi van, vai va, vu 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 sach)) ky nang xa hoi. hieu ve chat ((xuc va) OR (duc va)) danh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat sach)) ky nang xa hoi. hieu ve chat ((xuc va) OR (duc va)) danh vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuat sach)) ky nang xa hoi. hieu ve chat ((xuc va) OR (duc va)) danh vi va triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat sach)) ky nang xa hoi. hieu ve chat ((xuc va) OR (duc va)) danh vi va triet*.