Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh toan
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thanh hang » thanh hoang, tranh hang, thanh hung
thu luong » thu huong, thu tuong, phu luong
luong hoa » luong khoa, luong hoai, luong ha
khau luan » khoa luan, phap luan, pham luan
sach hoc » cach hoc, sach hoi, mach hoc
hoi khau » thoi khac, hoi chu, hoi khoa
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoc tap, nghien thu luong hoa ((thanh hang) OR (thanh thang)) hoa xa hoi khau luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghien thu luong hoa ((thanh hang) OR (thanh thang)) hoa xa hoi khau luan van".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien thu luong hoa ((thanh hang) OR (thanh thang)) hoa xa hoi khau luan van*.