Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
canh trinh » canh tranh, hanh trinh, canh tinh
khang cong » hang cong, thanh cong, dang cong
trinh van » trinh han, trinh quan, trinh toan
van khang » van khanh, van thanh, van quang
phat cac » phan cac, pha cac, phap cac
cong va » dong va, cong ha, cong tac

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 nhanh - canh trinh van khang cong va phat cac~.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - canh trinh van khang cong va phat cac*.