Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
duong manh » duong van
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cong manh » cong danh, cong thanh, hoang manh
manh cua » doanh cua, ban cua

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 tach - canh manh cua nhung ((cong manh) OR (duong manh)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - canh manh cua nhung ((cong manh) OR (duong manh)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - canh manh cua nhung ((cong manh) OR (duong manh)) van ban*.