Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu
cong ban » cong bang, cong san, cong tan
hanh cac » hang cac, hanh cat, nhanh cay
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc hien)) manh - thanh trung cua nhung cong ban ((khan ap) or (hanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) manh - thanh trung cua nhung cong ban ((khan ap) OR (hanh cac)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) manh - thanh trung cua nhung cong ban ((khan ap) or (hanh cac))*.