4005 SE Hawthorne Blvd Date of Visit: October 29, 2009 Price for 2 (with tip) $16 Though there was nothing particularly Vietnamese or Thai (as the sign implies) about the lunch I ate at Thanh Thao, it definitely is in the running for my favorite new lunch spot on Hawthorne. Today's visit was actually our second attempt to each there. The first was on Tuesday, the one day a week they are closed. That day, we ended up eating at No Fish, Go Fish right across the street instead, so it wasn't all bad. Thanh Thao is decent sized and was nearly full with diners, which is always a good…