Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
danh sai » danh bat, danh dau, hanh san
nam thuc » nam thuoc, am thuc, nam thu
dung sai » dung tai, dung va, dung dat
tu sach » thu sach, su sach, te sach
thuc xa » thuc xay, tuc xa, thuc va
hieu he » hieu ve, hiem he, hieu le
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
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: tu sach y nang ma hoa. hieu he nam thuc xa ((danh sai) or (dung sai)) ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoa. hieu he nam thuc xa ((danh sai) OR (dung sai)) ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoa. hieu he nam thuc xa ((danh sai) or (dung sai)) ((cua triet) or (cua viet))*.