Perhaps you should try some spelling variations:
thuong cong » thuong con, thuong dong, truong cong
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
huong cua » dung cua
hoc hieu » hoc thieu, hoc hien, doc hieu
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - anh huong cua ((thuong cong) OR (thong cong)) tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - anh huong cua ((thuong cong) OR (thong cong)) tan toan cao*".