Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
thien anh » thien danh, tien anh, thien thanh
hanh han » hanh nhan, hanh phan, hanh san
cac hang » cac dang, cac bang, cac lang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
can ban » van ban, 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: toc ((hieu manh) OR (thien anh)) - hanh han ((cac hang) OR (can ban)) cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((hieu manh) OR (thien anh)) - hanh han ((cac hang) OR (can ban)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: toc ((hieu manh) OR (thien anh)) - hanh han ((cac hang) OR (can ban)) cong tan toan cao*.