Perhaps you should try some spelling variations:
nhanh bang » nhanh lang, nhanh mang, nhanh quang
hien xanh » hien hanh, hien nhanh, chieu xanh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
bang va » hang va, ban va, trang va
va dung » van dung, va duong, vat dung

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 - nhanh bang va dung ((cong dan) or (cong tan)) ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - nhanh bang va dung ((cong dan) OR (cong tan)) ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - nhanh bang va dung ((cong dan) or (cong tan)) ((toan cao) or (toan ban))*.