Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao van que snippets" » "dao van que snippets", "ho van que snippets", "cao van que snippets", "hao van quy snippets", "hao van due snippets", "hao van hue 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: (((("hao van que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao van que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao van que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.