Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, thong cua
trung cap » truong cao, trung tam
dung cua » dung luan, dung cho
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan dau » phan tu, hang dau

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 ((((trung cua) or (trung cap))) or (dung cua)) thong cong tac phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((((trung cua) OR (trung cap))) OR (dung cua)) thong cong tac phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((((trung cua) or (trung cap))) or (dung cua)) thong cong tac phan dau*.