Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh tuan » trinh quan, trinh toan, trinh luan
luong cong » dung cong, trong cong, cong cong
hoc thieu » toc thieu, hoc hien
doc hieu » toc thieu, hoc hien
ung cong » dung cong, duong cong, cuong cong
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: ((hoc thieu) or (doc hieu)) manh - hanh trinh tuan ((ung cong) or (luong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) manh - hanh trinh tuan ((ung cong) OR (luong cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) manh - hanh trinh tuan ((ung cong) or (luong cong)) dan toan cao*.