Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hai van cuc snippets" » "hai van code snippets", "thai van cuc snippets", "ha van cuc snippets", "hai tan cuc snippets", "hai van duc snippets", "hai van luc snippets", "hai van cu 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: (((("hai van cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai van cuc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hai van cuc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai van cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.