Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von xuan ho snippets" » "vo xuan ho snippets", "von luan ho snippets", "van xuan ho snippets", "von xuan ha snippets", "von xuan huy snippets", "von xuan thu 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: (((("von xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("von xuan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von xuan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.