Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
tranh luat » trinh luat, tranh luan, trinh luan
dong trong » duong trong, dung trong, dong thong
cong trong » cong thuong, duong trong, cong trinh
tan tranh » tan tran, can tranh, lan tranh
tranh ban » trinh ban, tranh hang, tranh luan
ho thien » nho thien, ho thiet, ho tien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thien hach - canh tranh luat ((dong trong) or (cong trong)) tan tranh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thien hach - canh tranh luat ((dong trong) OR (cong trong)) tan tranh ban*.