Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet danh » thien danh, thien anh, tiep danh
thien dang » thien bang, thien danh, thien nang
trung vat » trung va, trung van, trong vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong anh » cong danh, dong anh, hong anh
anh juan » anh tuan, anh quan, anh xuan
juan cao » quang cao, toan cao, quan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet danh) or (thien dang)) - thanh trung vat dung cong anh juan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet danh) OR (thien dang)) - thanh trung vat dung cong anh juan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet danh) or (thien dang)) - thanh trung vat dung cong anh juan cao*.