Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
chai tinh » chau tinh, thai tinh, cham tinh
doi chai » doi chi, doi thoai, doi cua
trinh he » trinh han, trinh hoa, trinh thi
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chai tinh - hanh trinh he thong cong ((dan toan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chai tinh - hanh trinh he thong cong ((dan toan) OR (van tuan)) ban.
• Adding a wildcard symbol may retrieve word variants: doi chai tinh - hanh trinh he thong cong ((dan toan) or (van tuan)) ban*.