Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho trien he snippets" » "cho tre he snippets", "cho tin he snippets", "cho tuyen he snippets", "cho thien hue snippets", "cho trien ben snippets", "cho trien nha snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cho trien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho trien he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho trien he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho trien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.