Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai phong so snippets" » "hai phong so snippets", "tai phong so snippets", "dai hong so snippets", "dai phong mo snippets", "dai phong cho snippets", "dai cong so 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: (((("dai phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai phong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai phong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.