Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
hoc hieu » hoc hien, doc hieu, hoc dieu
cap dang » cao dang, cac dang, cap bang
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hieu) OR (hoc thieu)) manh - hanh trung cap dang ((cong dan) or (cong tac)) phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) manh - hanh trung cap dang ((cong dan) OR (cong tac)) phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) manh - hanh trung cap dang ((cong dan) or (cong tac)) phan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) manh - hanh trung cap dang ((cong dan) or (cong tac)) phan tap*.