Perhaps you should try some spelling variations:
chiet tach » chieu sach
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh, bien tinh
tac han » tac nhan, tac ha, tac can
han tu » phan tu, hanh tu, ban tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu tinh) or (chiet tach)) - canh trinh luat ((nhung cong) OR (thong cong)) tac han tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (chiet tach)) - canh trinh luat ((nhung cong) OR (thong cong)) tac han tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((lieu tinh) or (chiet tach)) - canh trinh luat ((nhung cong) OR (thong cong)) tac han tu".
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (chiet tach)) - canh trinh luat ((nhung cong) OR (thong cong)) tac han tu*.