Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tach » chiet tach, chieu sach, chiu trach
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tach - ((((hanh tang) or (hanh mang))) or (canh tranh)) va nhung cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tach - ((((hanh tang) OR (hanh mang))) OR (canh tranh)) va nhung cong tan tran cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu tach - ((((hanh tang) or (hanh mang))) or (canh tranh)) va nhung cong tan tran cao*.