Perhaps you should try some spelling variations:
chung trong » cung trong, chung thong, hung trong
theo chieu » theo tieu, ho chieu, thi chieu
thanh tung » thanh cong
cao chung » cac chung, cho chuong, chon chung
trong van » trong cac
theo chu » cho chu, chao chu, theo yeu
tung cao » nung cao, truong cao, trung cap
can thi » cau thi, dan thi, van thi

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) or (theo chu)) tinh - thanh tung cao chung trong van ((bai tap) or (can thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) tinh - thanh tung cao chung trong van ((bai tap) OR (can thi)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) tinh - thanh tung cao chung trong van ((bai tap) or (can thi))*.