Perhaps you should try some spelling variations:
trang thiet » trong thiet, trinh thiet, toan thiet
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, canh tranh, hanh trinh
thiet dang » thien dang, nhiet dong, nhiet nang
dang cong » dung cong
cong phan » cong nhan, cong khan, chong phap
thanh tay » thanh tai, thanh toan, thanh thuy
ho chieu » theo chieu, hoc thieu, mot chieu
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh trang thiet dang cong phan ((phan lap) or (thanh tay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh trang thiet dang cong phan ((phan lap) OR (thanh tay)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh trang thiet dang cong phan ((phan lap) or (thanh tay))*.