Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi gen cua snippets" » "doi gen code snippets", "do gen cua snippets", "doi dien cua snippets", "doi bien cua snippets", "doi gian cua snippets", "doi menh cua snippets", "doi benh cua 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: (((("doi gen cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi gen cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi gen cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi gen cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.