Perhaps you should try some spelling variations:
trong trung » truong trung, trong truong, trong rung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhanh lang » nhanh quang, nhanh thang, nhan dang
trung van » truong van, trong van, trung va
nhan dan » phan dau, gian dan, nhan tai
van dung » van dong, xay dung, tin dung
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((nhanh lang) or (nhan dan)) van dung trong trung van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((nhanh lang) OR (nhan dan)) van dung trong trung van chat.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((nhanh lang) or (nhan dan)) van dung trong trung van chat*.