Perhaps you should try some spelling variations:
phuong luong » thuong luong, phuong duong, phuong dung
theo chieu » theo tieu, theo chu, thi chieu
mang luan » tang luan, hang luan, mong luan
bang luan » tang luan, hang luan, dung luan
luong tai » dung tai, luong va
ho chieu » hoc thieu, doi chieu, mot chieu
tai quan » tai quang, hai quan, mai quan
quan lap » quan luan, quang lam, quan lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chieu)) sach - hanh ((mang luan) OR (bang luan)) phuong luong tai quan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh ((mang luan) OR (bang luan)) phuong luong tai quan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sach - hanh ((mang luan) OR (bang luan)) phuong luong tai quan lap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - hanh ((mang luan) OR (bang luan)) phuong luong tai quan lap*.