Perhaps you should try some spelling variations:
"reading dai tu snippets" » "reading a tu snippets", "reading basic tu snippets", "reading dai thu snippets", "reading tai tu snippets", "reading mai tu snippets"
"creating a code snippets" » "creating _ code snippets", "reading a code snippets"
"locating bug core snippets" » "locating bug code 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: (((("reading dai tu snippets") or ("creating a code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("reading dai tu snippets") OR ("creating a code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( reading dai tu snippets ) or ( creating a code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("reading dai tu snippets") or ("creating a code snippets"))) or ("locating bug core snippets"))*.