Perhaps you should try some spelling variations:
thieu tach » thien hach, chieu sach, hieu cach
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh cua » doanh cua, ban cua
manh van » anh van, menh van, canh van

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