Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung cap, dung cua
vang toan » van toan, dang toan, quang 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: theo chieu sach - hanh ((trung cua) OR (trung tuan)) thong cong ((vang toan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((trung cua) OR (trung tuan)) thong cong ((vang toan) OR (van tuan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trung cua) OR (trung tuan)) thong cong ((vang toan) or (van tuan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trung cua) OR (trung tuan)) thong cong ((vang toan) or (van tuan)) ban*.