Perhaps you should try some spelling variations:
luc thanh » duc thanh, luu thanh, tuc thanh
mach hoc » cach hoc, dich hoc, bac hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
cong hoc » dong hoc, cong hoa, cong coc
hoi dinh » thoi dinh, hoi tinh, hoi sinh
van tuan » van quan, van ban, anh tuan
anh hoc » sinh hoc, benh hoc, hinh hoc
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: tu ((mach hoc) or (anh hoc)) tap, nghien cuu dong luc thanh cong hoc xa hoi dinh van tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (anh hoc)) tap, nghien cuu dong luc thanh cong hoc xa hoi dinh van tuan.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (anh hoc)) tap, nghien cuu dong luc thanh cong hoc xa hoi dinh van tuan*.