Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
hang cua » mang cua, hang ca, huong cua
nang dua » nang du, nang suat, nang quan
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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: theo phap tinh - anh ((hang cua) OR (nang dua)) nhung cong ((dan than) OR (ban than)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo phap tinh - anh ((hang cua) or (nang dua)) nhung cong ((dan than) OR (ban than)) cao~".
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - anh ((hang cua) or (nang dua)) nhung cong ((dan than) OR (ban than)) cao*.