Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuong le doc snippets" » "xuong len doc snippets", "vuong qh doc snippets", "trong le doc snippets", "vuong le duc snippets", "vuong le dac snippets", "vuong me doc 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: (((("vuong le doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vuong le doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuong le doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuong le doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.