Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
thong cac » trong cac, thong cua, thong xay
ho chieu » theo chieu, doi chieu, mot chieu
van manh » van minh, van anh, van hanh
manh cua » doanh cua, ban cua
cong san » cong tac
cach » sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - van manh cua cong cong san ((thong cac) OR (phong cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - van manh cua cong cong san ((thong cac) OR (phong cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - van manh cua cong cong san ((thong cac) OR (phong cach))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - van manh cua cong cong san ((thong cac) OR (phong cach))*.