Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
mot ngoai » hoc ngoai, doi ngoai
sach hoc » cach hoc, sach hoi, mach hoc
mot ngoc » mot goc, mot nguoi, ma ngoc
hang hoa » hang khoa, thanh hoa, hang va
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cuu ((mot ngoc) OR (mot ngoai)) thanh hang hoa xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tap, nghien cuu ((mot ngoc) OR (mot ngoai)) thanh hang hoa xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu ((mot ngoc) OR (mot ngoai)) thanh hang hoa xa hoi va nhan dan*.