Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cac » nhan cach, phan dau, phan lap

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 - canh ((trinh van) OR (trinh han)) hang cong tac phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh ((trinh van) OR (trinh han)) hang cong tac phan cac".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh ((trinh van) OR (trinh han)) hang cong tac phan cac*.