Perhaps you should try some spelling variations:
thuat lanh » thuat san
thuat lap » thuat xay, thuat bai, thuat bao
va hang » van hang, va nang, va lang
dao duc » giao duc, tao duoc
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
nang xa » lang xa, nang ma, mang xa
ve dao » de dao, va dao, ve bao
va cuu » va cau, va chu, va huu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat lanh) OR (thuat lap)) v ((nang xa) or (nang x)) hoi. hieu ve dao duc va hang va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat lanh) OR (thuat lap)) v ((nang xa) OR (nang x)) hoi. hieu ve dao duc va hang va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat lanh) OR (thuat lap)) v ((nang xa) or (nang x)) hoi. hieu ve dao duc va hang va cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thuat lanh) OR (thuat lap)) v ((nang xa) or (nang x)) hoi. hieu ve dao duc va hang va cuu tre*.