Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
truong cua » truong ca, truong quan, truong cao
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cong cong » cong dong, trong cong, dung cong
trinh ban » trinh han, trinh san, trinh dan
ho chiet » ho chieu, ho thiet, hoa thiet
cong tan » cong tac, cong san, cong thanh
tran ban » tranh ban, tran van, 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 chiet) OR (hoc thiet)) tach - hanh truong cua cong cong tan ((tran ban) or (trinh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thiet)) tach - hanh truong cua cong cong tan ((tran ban) OR (trinh ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (hoc thiet)) tach - hanh truong cua cong cong tan ((tran ban) or (trinh ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) OR (hoc thiet)) tach - hanh truong cua cong cong tan ((tran ban) or (trinh ban))*.