Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh van » trinh han, trinh quan, trinh toan
dang cong » dung cong
van dang » van dong, van dung, van nang
cong tac » cong ty
tac phat » tac pham, tam phat, tan phat
phat cac » phan cac, pha cac, phap cac

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