Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu trong » hieu truong, hieu tuong, nhiem trong
bien tinh » bi tinh, yen tinh, diep tinh
tung hieu » trung hieu, dung hieu, tang hieu
cong tinh » cong trinh, cong vinh, long tinh
pho bien » phan bien, che bien, so bien
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: pho bien tinh - thanh tung hieu trong cong tinh toan tap~.
• Adding a wildcard symbol may retrieve word variants: pho bien tinh - thanh tung hieu trong cong tinh toan tap*.