Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"lap cong duc snippets" » "tap cong duc snippets", "lap dong duc snippets", "luat cong duc snippets", "lap cong suc snippets", "lap hong duc snippets", "lap cong dac 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: (((("lap cong duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap cong duc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( lap cong duc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap cong duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.