Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » canh tranh, hanh chinh
ton tien » toan tien, tong tien, ton thien
tien anh » tieng anh, tien manh, dien anh
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
dan toan » van toan, manh toan, dien toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ton tien anh - hanh trinh va thong cong ((((dan toan) or (xuan toan))) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ton tien anh - hanh trinh va thong cong ((((dan toan) OR (xuan toan))) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ton tien anh - hanh trinh va thong cong ((((dan toan) or (xuan toan))) or (dan than)) cau*.