Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
nhung cong » dung cong, thong cong, hang cong
trinh cua » trinh luat, trinh quan, trinh luan
theo chu » cho chu, chao chu, theo yeu
tinh cua » sinh cua, tinh chat, tranh cua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 - hanh ((trinh cua) or (tinh cua)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) xanh - hanh ((trinh cua) or (tinh cua)) nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) xanh - hanh ((trinh cua) or (tinh cua)) nhung cong dan toan cao*.