Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh trung tuan ((nhung cong) or (((dang cong) OR (dung cong)))) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trung tuan ((nhung cong) OR (((dang cong) OR (dung cong)))) tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh trung tuan ((nhung cong) or (((dang cong) OR (dung cong)))) tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trung tuan ((nhung cong) or (((dang cong) OR (dung cong)))) tinh toan ban*.