Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
nhanh mang » nhanh lang, hanh mang, nhanh quang
nhung cong » dung cong, thong cong, hang cong
theo chu » cho chu, chao chu, theo yeu
cong tac » cong ty
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
mang va » mang vua, hang va, bang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo chu)) xanh - nhanh mang va nhung cong tac ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - nhanh mang va nhung cong tac ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) xanh - nhanh mang va nhung cong tac ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) xanh - nhanh mang va nhung cong tac ((toan cau) OR (toan cao))*.