Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
theo lich » thai lich, theo sach
tranh cua » doanh cua, manh cua
dan toan » van toan, dan than, manh toan
toan ban » van 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 ((theo lich) or (thien hach)) - hanh tranh cua ((nhung cong) or (thong cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((theo lich) OR (thien hach)) - hanh tranh cua ((nhung cong) OR (thong cong)) dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((theo lich) or (thien hach)) - hanh tranh cua ((nhung cong) or (thong cong)) dan toan ban*.