Perhaps you should try some spelling variations:
nang loai » dang loai, nang noi, nhan loai
loai hoc » logic hoc, loai khoa, dai hoc
hieu van » thien van, lieu va, hieu ve
hanh dao » lanh dao, thanh dat, thanh dam
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang loai hoc. ((hieu van) or (hieu va)) cam tuc xa hanh dao ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang loai hoc. ((hieu van) OR (hieu va)) cam tuc xa hanh dao ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang loai hoc. ((hieu van) or (hieu va)) cam tuc xa hanh dao ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang loai hoc. ((hieu van) or (hieu va)) cam tuc xa hanh dao ((cua tre) OR (cua te))*.