Perhaps you should try some spelling variations:
nang quang » nang quan, dang quang, hang quang
gian lang » gian dan
lang viet » nang viet, mang viet, dang viet
quang duc » quang xuc, quang duy, quang dung
van gian » van giang, dan gian, van giao
viet dat » viec dat, viet da, viet dao
tin nang » tin dung, ki nang, thi nang
duc dien » duoc dien, duc tien, cuc dien
hoa » khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( dinh van gian lang viet dat ) or ( tin nang quang duc dien hoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( dinh van gian lang viet dat ) OR ( tin nang quang duc dien hoa ))*.