Perhaps you should try some spelling variations:
quan trong » gian trong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh nang » ganh nang, anh nang, hanh mang
nang quan » nang suat
cong ban » cong bang, cong san, cong tan
ban quan » van quan
quan tap » quan tai, quan lap, quan tam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh nang quan trong cong ban quan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh nang quan trong cong ban quan tap*.