Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » thong cong, hang cong, nhung don
thanh toan » thanh hoa, thanh san, tinh toan
hoc thien » hoc hien, hoc thieu, hoc thiet
tranh cua » doanh cua, manh cua
dung cong » dung trong
manh toan » anh tuan, tinh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - canh tranh cua ((nhung cong) or (dung cong)) ((manh toan) OR (thanh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - canh tranh cua ((nhung cong) OR (dung cong)) ((manh toan) OR (thanh toan)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - canh tranh cua ((nhung cong) or (dung cong)) ((manh toan) OR (thanh toan)) tap*".