Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » hanh trang, hanh mang, hanh tung
dang cong » dung cong
anh tang » anh bang, anh dang, anh nang
cua dang » cua cong, cua ban
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 ((hieu manh) or (chiet tach)) - ((hanh tang) OR (anh tang)) cua dang cong tan tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - ((hanh tang) OR (anh tang)) cua dang cong tan tran ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chiet tach)) - ((hanh tang) OR (anh tang)) cua dang cong tan tran ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chiet tach)) - ((hanh tang) OR (anh tang)) cua dang cong tan tran ban*.