Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nhung dung » phuong dung, ung dung, thong dung
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua nhung » va nhung
hoc viet » hoc hien
dung van » duong van, dung va, dang van
van toan » van tuan, van tan, van thanh
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 viet) or (hoc thiet)) tach - ((hanh tranh) OR (hanh trinh)) cua nhung dung van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc viet) OR (hoc thiet)) tach - ((hanh tranh) OR (hanh trinh)) cua nhung dung van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc viet) or (hoc thiet)) tach - ((hanh tranh) OR (hanh trinh)) cua nhung dung van toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc viet) or (hoc thiet)) tach - ((hanh tranh) OR (hanh trinh)) cua nhung dung van toan ban*.