Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tu tin doi snippets" » "tu tin code snippets", "tu tinh doi snippets", "tu tin di snippets", "tu tin don snippets", "thu tin doi snippets", "tu tieng doi snippets", "tru tinh doi snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("tu tin 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: (((("tu tin doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tu tin doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu tin doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.