Perhaps you should try some spelling variations:
"creating anh trac snippets" » "creating a trac snippets", "creating _ trac snippets", "creating sinh trac snippets", "creating anh tuan snippets", "creating anh thuc snippets"
"reading a 3d snippets" » "reading _ 3d snippets", "reading 1 3d snippets", "reading 2 3d snippets", "reading a d 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: (((("creating anh trac snippets") or ("reading a 3d snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("creating anh trac snippets") OR ("reading a 3d snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( creating anh trac snippets ) or ( reading a 3d snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("creating anh trac snippets") or ("reading a 3d snippets"))) or ("locating bug code snippets"))*.