Perhaps you should try some spelling variations:
thuc cach » thuoc sach, truoc cach, thuc hanh
cac khanh » cac thanh, cach nhanh, khac khanh
khanh hoa » thanh hoa, hang hoa
thu cach » thu canh, tu cach, tho cach
cuu cong » cua cong, thu cong, cac cong
cong cac » cuong cac, cong tac, cong cau
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
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 cach) OR (thuc cach)) hoc tap, nghien cuu cong cac khanh hoa hoc xa hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu cach) OR (thuc cach)) hoc tap, nghien cuu cong cac khanh hoa hoc xa hoi va nhan va".
• Adding a wildcard symbol may retrieve word variants: ((thu cach) OR (thuc cach)) hoc tap, nghien cuu cong cac khanh hoa hoc xa hoi va nhan va*.