Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tang » anh tang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, cua tong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cao » toan cao, tran chau, trang cho
doi thi » doi thoi, do thi, doi thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi thi) OR (doi khi)) canh - ((hanh tang) or (hanh trang)) cua thong cong tac tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi thi) OR (doi khi)) canh - ((hanh tang) OR (hanh trang)) cua thong cong tac tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi thi) OR (doi khi)) canh - ((hanh tang) or (hanh trang)) cua thong cong tac tran cao".
• Adding a wildcard symbol may retrieve word variants: ((doi thi) OR (doi khi)) canh - ((hanh tang) or (hanh trang)) cua thong cong tac tran cao*.