Perhaps you should try some spelling variations:
khanh hoa » hang hoa
thanh hoa » thanh pho
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
cuu tong » cuu cong, cuu tinh, huu tung
nhan dan » phan dau, gian dan, nhan tai
va nhan » van nhan, ca nhan, va phan
tong o » thong o, trong o, dong o
hoc xa » hoc ma

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

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