Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tinh » thanh binh, nhanh tinh, than kinh
cong nganh » cong ngang, trong nganh, duong nganh
hieu manh » chieu xanh, hieu nganh, dieu hanh
chat hang » chat quang, chat chong, chat phong
hang cong » dang cong, hang nong, bang cong
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chiet tach)) - thanh tinh chat hang cong nganh ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - thanh tinh chat hang cong nganh ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chiet tach)) - thanh tinh chat hang cong nganh ((toan cau) OR (toan tap))*".