Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
gian man » gian dan, gian van, gian ban
gian lan » gian lang, gian dan, giang van

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 - thanh tinh cua thong cong dan ((gian man) or (gian lan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh tinh cua thong cong dan ((gian man) OR (gian lan)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh tinh cua thong cong dan ((gian man) or (gian lan))*.