Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tat dan cho snippets" » "tat dan code snippets", "hat dan cho snippets", "mat dan cho snippets", "tat dat cho snippets", "tat danh cho snippets", "tat san cho snippets", "tat dac cho 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: (((("tat dan cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tat dan cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tat dan cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat dan cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.