Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung duong » nhung dung, nhung huong, nhung tuong
thiet hach » thien hach, thuyet hach, thiet hai
hanh trinh » hanh chinh
duong manh » duong van
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh 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 thiet hach - ((thanh trung) or (((hanh trinh) or (canh tranh)))) cua nhung duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - ((thanh trung) OR (((hanh trinh) OR (canh tranh)))) cua nhung duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - ((thanh trung) or (((hanh trinh) or (canh tranh)))) cua nhung duong manh toan ban*.