Perhaps you should try some spelling variations:
ngang nhanh » nang thanh, nhan nhanh, nganh thanh
cong ngang » cong nhan, cong quang, cong lang
hanh trong » hanh trang, anh trong, hinh trong
hieu sang » chieu sang, hieu lang, hieu quang
dang cong » dung cong
nhanh cau » nhanh cay, thanh chau, nhanh ha
doc hieu » toc thieu, hoc thieu, hoc hien
cac dang » cao dang, cac dan, cac cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - hanh trong cac dang cong ngang nhanh cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - hanh trong cac dang cong ngang nhanh cau*.