Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"mao dat cua snippets" » "mao dat code snippets", "tao dat cua snippets", "giao dat cua snippets", "mang dat cua snippets", "mao dai cua snippets", "mao day cua snippets", "mao mat 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: (((("mao dat 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: (((("mao dat cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( mao dat cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao dat cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.