Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong van ca snippets" » "hoang van ca snippets", "thong van ca snippets", "song van ca snippets", "hong van cau snippets", "hong van cua snippets", "hong dan ca 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: (((("hong van ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong van ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong van ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong van ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.