Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
sinh sach » chinh sach, sinh san, sang sach
tran tuan » tran xuan, tran quang, tran thanh
hang cong » dang cong, hang nong, bang cong
cong cao » cong cau, cong cac, cong co
chat cam » chat cao, thuat cam, chat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh sach - hanh ((trung tuan) OR (tran tuan)) hang cong cao chat cam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh sach - hanh ((trung tuan) OR (tran tuan)) hang cong cao chat cam*".