Perhaps you should try some spelling variations:
phap tinh » phap sinh, phap tang, tap tinh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
anh nang » ganh nang, anh bang, anh dang
nang dua » nang du, nang suat, nang quan
dua dung » duc dung, duy dung, qua dung
toan cao » toan ban
toan tap » toan ban

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) OR (phap tieng)) - anh nang dua dung cong manh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((phap tinh) OR (phap tieng)) - anh nang dua dung cong manh ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((phap tinh) OR (phap tieng)) - anh nang dua dung cong manh ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo ((phap tinh) OR (phap tieng)) - anh nang dua dung cong manh ((toan cao) or (toan tap))*.