Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
thuc van » thuc vat, thuc dan, thuc va
van phan » van phong, van thanh, luan phan
phan tap » phan lap, han tap, pha tap
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
tap cua » tap quan, tiep cua
y nang » ky nang, ly nang, v nang
ho hoi » hoc hoi, hoi hoi, co hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ((ho hoi) OR (hoa hoi)). hieu vu cham thuc van phan tap cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((ho hoi) OR (hoa hoi)). hieu vu cham thuc van phan tap cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ho hoi) OR (hoa hoi)). hieu vu cham thuc van phan tap cua triet*.