Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
manh tuong » manh tung, manh cuong, minh tuong
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
hoc manh » hoc anh, hoc hanh, hoc danh
tuong ho » tong hop
nhan dan » phan dau, gian dan
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
voi cac » loi cach
ma voi » ba voi, da voi, ma moi
ho ma » hoc ma, co ma, ho ba

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien thu cong hoc manh tuong ho ma voi cac ((nhan dan) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien thu cong hoc manh tuong ho ma voi cac ((nhan dan) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien thu cong hoc manh tuong ho ma voi cac ((nhan dan) OR (nhan tai))*.