Perhaps you should try some spelling variations:
"creating van duy snippets" » "creating a duy snippets", "creating _ duy snippets", "creating van dung snippets"
"reading a o snippets" » "reading _ o snippets", "reading 1 o snippets", "reading 2 o snippets", "reading va o snippets", "reading ca o snippets", "reading la o snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("reading a o snippets") or ("creating van duy snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("reading a o snippets") OR ("creating van duy snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( reading a o snippets ) or ( creating van duy snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("reading a o snippets") or ("creating van duy snippets"))) or ("locating bug code snippets"))*.