Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao chat cua snippets" » "dao chat code snippets", "cao chat cua snippets", "dao phat cua snippets", "tao chat cua snippets", "dao nhat cua snippets", "dao chat va snippets", "dao chat huu 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: (((("dao chat 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: (((("dao chat cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao chat cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao chat cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.