Perhaps you should try some spelling variations:
thoai tinh » thai tinh, thoi tinh, thoai tieng
hanh trinh » canh tranh, hanh chinh
doi thoai » hoi thoai, doi thoi, doi ngoai
lang cong » dang cong, bang cong, hang cong
trinh va » trinh van, trinh vat, trinh ve
van tuan » van ban, anh tuan
van quan » van ban
va lang » va nang, hoa lang

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

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