Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
phan song » phan cong, phan hong, phan xuong
song tinh » cong tinh, long tinh, dong tinh
thanh lap » thanh san, phan lap, thanh hai
cua phan » cua nhan, cua phap, cua han
khan cap » khan ap, than cap, khoan cam

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 - thanh trung cua phan song tinh ((khan cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cua phan song tinh ((khan cap) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cua phan song tinh ((khan cap) or (thanh lap))*.