Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang kai he snippets" » "hoang hai he snippets", "hoang mai he snippets", "hoang dai he snippets", "hoang tai he snippets", "hoang kai chen 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: (((("hoang kai 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: (((("hoang kai he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang kai he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang kai he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.