Perhaps you should try some spelling variations:
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
luan bang » luan nang, luan ban, luan tang
bang cong » dang cong, bang song, hang cong
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
cong can » cong san, cong tan, cong dan
can chan » dan chan, cam chan, ban chan
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo phap tinh - ((anh tang) or (anh bang)) luan bang cong can chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap tinh - ((anh tang) OR (anh bang)) luan bang cong can chan cau.
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - ((anh tang) or (anh bang)) luan bang cong can chan cau*.