Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu luc doi snippets" » "thu luc code snippets", "thuy luc doi snippets", "thu tuc doi snippets", "thu duc doi snippets", "thu luoc doi snippets", "thu lua doi snippets", "thu luc moi snippets"
"python using java snippets" » "python using data 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: (((("thu luc doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu luc doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu luc doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu luc doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.