Perhaps you should try some spelling variations:
"te xac dinh thang" » "te xac dinh thanh", "te xac danh thang", "te xac vinh thang", "te xa dinh thang", "te xay dinh thang", "te cac dinh thang"
"so sach danh thin" » "so sach tranh thin", "so sach dao thin", "so sach dung thin", "so sach canh thin", "so sach danh thanh", "so sach danh thang", "so sanh danh thin", "bo sach danh thin", "co sach danh thin"
"toc canh tranh tri" » "toc canh trang tri", "toc canh thanh tri", "toc canh tran tri", "luoc canh tranh tri", "ngoc canh tranh tri", "luc canh tranh tri"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("so sach danh thin") or ((("toc canh tranh tri") or ("te xac dinh thang"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("so sach danh thin") OR ((("toc canh tranh tri") OR ("te xac dinh thang")))).
• Removing quotes may allow a broader search: (( so sach danh thin ) or ((( toc canh tranh tri ) or ( te xac dinh thang )))).
• Adding a wildcard symbol may retrieve word variants: (("so sach danh thin") or ((("toc canh tranh tri") or ("te xac dinh thang"))))*.