Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
nhung cong » thong cong, hang cong, nhung don
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
dung cong » dung trong
manh toan » anh tuan, tinh toan
anh mang » hanh mang, anh bang, anh dang
mang cua » manh cua, dung cua, ban cua

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