Perhaps you should try some spelling variations:
phuong tang » phuong bang, phuong hoang, phuong thanh
theo chieu » theo tieu, ho chieu, theo chu
thanh tung » thanh cong
cua phuong » cuu phuong, cuc phuong, luan phuong
doc hieu » toc thieu, hoc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
tang dan » tang van, tung dan, tang luan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doc hieu)) sang - thanh tung cua phuong tang dan ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doc hieu)) sang - thanh tung cua phuong tang dan ((phan lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doc hieu)) sang - thanh tung cua phuong tang dan ((phan lap) or (phan dau))*.