Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hanh manh » hanh mang, lanh manh, hoang manh
doc hieu » hoc thieu, hoc hien
manh cua » doanh cua, ban cua
dan toan » van toan, dan than, manh 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: ((doc hieu) or (toc thieu)) tinh - hanh manh cua ((nhung cong) or (thong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) tinh - hanh manh cua ((nhung cong) OR (thong cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) tinh - hanh manh cua ((nhung cong) or (thong cong)) dan toan cao*.