Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
danh toan » manh toan, anh toan, dan toan
manh cua » doanh cua, ban cua
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: hoc thien hach - canh manh cua ((dang cong) OR (dung cong)) danh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - canh manh cua ((dang cong) OR (dung cong)) danh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - canh manh cua ((dang cong) OR (dung cong)) danh toan tap*.