Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong dao so snippets" » "truong dao so snippets", "trong dam so snippets", "trong dan so snippets", "trong dai so snippets", "trong dao o snippets", "trong dao do 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: (((("trong dao 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: (((("trong dao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong dao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong dao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.