Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luan dat hon snippets" » "luan dat code snippets", "luat dat hon snippets", "luan dac hon snippets", "luan day hon snippets", "luan doat hon snippets", "luan dat phong snippets", "luan dat hang 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: (((("luan dat hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan dat hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luan dat hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan dat hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.