Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
ve triet » va trien, su triet
sanh thi » anh thi, oanh thi, nhanh thi
thi hang » thi hanh, thi nang, thi hong
dan hanh » dang hanh, dan khanh, ban hanh
so sanh » do sanh
hang xa » hoang xa, hang va, hang ca
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, va cam, ve cai
dao ve » bao ve, dap ve, dau ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh thi hang xa hoi. hieu ((ve cam) or (ve cham)) thuc ((dan hanh) or (dan thanh)) dao ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh thi hang xa hoi. hieu ((ve cam) OR (ve cham)) thuc ((dan hanh) OR (dan thanh)) dao ve triet.
• Adding a wildcard symbol may retrieve word variants: so sanh thi hang xa hoi. hieu ((ve cam) or (ve cham)) thuc ((dan hanh) or (dan thanh)) dao ve triet*.