Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hang cong » dang cong, hang nong, bang cong
chinh ca » chinh ta, chinh va, chinh tai
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
ca hang » cua hang, ca chang, va hang
han tap » han tai, nhan tai, nhan tao

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 chinh ca hang cong tan ((han tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh chinh ca hang cong tan ((han tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh chinh ca hang cong tan ((han tap) or (toan tap))*.