Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
thuc day » thuc dan, thuc vat
phan lap » phan dau
day phan » dam phan, duy phan, dan phan
toc sach » hoc sach, doc sach, thuoc sach
ve triet » va trien, su triet
hieu vu » hieu va, hieu ve, hieu su
vu nham » vu kham, vu cham, sua nham
sach ty » sach y, sach tu, sach thu
nang ho » nang hoc, nang co, tang ho
ty nang » ky nang, ty xang, ty hang
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ho hoi. hieu vu nham thuc day phan lap ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ho hoi. hieu vu nham thuc day phan lap ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ho hoi. hieu vu nham thuc day phan lap ((cua triet) or (ve triet))*.