Perhaps you should try some spelling variations:
"anh quang de snippets" » "anh xquang de snippets", "anh quan de snippets", "nhanh quang de snippets", "anh quang le snippets", "anh quang d snippets", "anh quang do snippets"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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: (((("anh quang de snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh quang de snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh quang de snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh quang de snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.