Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
tong cong » trong cong, cong cong, dung cong
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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 ((trung tuan) or (truong thanh)) ((nhung cong) or (tong cong)) dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((trung tuan) OR (truong thanh)) ((nhung cong) OR (tong cong)) dan phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trung tuan) or (truong thanh)) ((nhung cong) or (tong cong)) dan phan cac*.