Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cua thuong » cua truong, cua phuong, ca thuong
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua khong, cua tong, suat thong
yen tinh » tuyen tinh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

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