Perhaps you should try some spelling variations:
phuong dang » phuong dung, phuong dong, huong dang
thuc phuong » thu phuong, thach phuong, thi phuong
canh trinh » canh tranh, hanh trinh, canh tinh
trinh thuc » trinh tu, trinh thi
hanh thanh » nhanh thanh, thanh thanh, khanh thanh
hoc thieu » hoc hien
dang hanh » dang thanh, ban hanh, dang van
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) tach - canh trinh thuc phuong dang hanh thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tach - canh trinh thuc phuong dang hanh thanh lap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tach - canh trinh thuc phuong dang hanh thanh lap*.