Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sang mai » sang ma, sang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
danh bat » doanh bat, anh bai, dinh ba
thau xay » thuat xay, tu xay, phan xay
thu hac » thu hai, thu xac, thu dac
bat cua » ban cua, mat cua, bai cua
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu he » hieu ve, hiem he, hieu le
ky sang » ky nang, ky dang, ky tang
he nam » ha nam, nghe nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky sang mai khoi. hieu he nam ((thu ha) or (((thu hac) or (thau xay)))) danh bat cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky sang mai khoi. hieu he nam ((thu ha) OR (((thu hac) OR (thau xay)))) danh bat cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky sang mai khoi. hieu he nam ((thu ha) or (((thu hac) or (thau xay)))) danh bat cua triet*.