Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
canh trinh » canh tranh, hanh trinh, canh tinh
cong thang » cong thanh, cang thang, cong thong
manh tinh » man tinh, manh binh, canh tinh
dong cong » duong cong, dung cong, dang cong
thang ban » hang ban, tang ban, thanh ban
ha dong » hoat dong, van dong
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu tach - ((canh trinh) or (manh tinh)) ha dong cong thang ban can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu tach - ((canh trinh) OR (manh tinh)) ha dong cong thang ban can*.