Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van que snippets" » "dang van que snippets", "hoang van que snippets", "trong van que snippets", "tang van quy snippets", "tang van due snippets", "tang 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: (((("tang 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: (((("tang van que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang van que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang van que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.