Perhaps you should try some spelling variations:
trung thanh » truong thanh
tang thanh » dang thanh, hoang thanh, quang thanh
thang cong » thanh cong, thang long, thong cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong anh » cong danh, dong anh, hong anh
anh luan » anh tuan, anh quan, anh xuan
luan ban » luan van, luan san, luan han

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 - manh ((tang thanh) or (trung thanh)) thang cong anh luan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - manh ((tang thanh) OR (trung thanh)) thang cong anh luan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - manh ((tang thanh) or (trung thanh)) thang cong anh luan ban*.