Perhaps you should try some spelling variations:
charts robert » hart robert, schwartz robert, chase robert
using charts » using chart, using chairs, using courts
tan yang » dan yang, tan ying, tao yang
tan yong » tan hong, tan kong, tan ying
time att » time art, time a, time all
time age » time wage, time usage, prime age
robert j » robert _, robert e

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan yang) OR (tan yong)) ii ((time att) OR (time age)) using charts robert j ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan yang) or (tan yong)) ii ((time att) OR (time age)) using charts robert j ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan yang) or (tan yong)) ii ((time att) OR (time age)) using charts robert j ;*.