Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh hinh » hanh chinh, hanh tinh, hanh dinh
giang van » hoang van, dang van, gian dan
va thong » va thuong, va phuong, he thong
cong san » cong tac
gian man » gian dan, gian lan, gian van
hinh va » chinh va, hanh va, tinh va

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 hinh va thong cong san ((gian man) or (giang van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh hinh va thong cong san ((gian man) OR (giang van)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh hinh va thong cong san ((gian man) or (giang van))*.