Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham thuc » nham thuc, pham thuc, tham thuc
phan tap » phan lap, pha tap, phan tu
thuc van » thuc vat, thuc dan, thuc va
thu sach » tu sach, thuat sach, thuoc sach
hoc hoi » hoc khoi, hoc hoa, hoc noi
hieu vu » hieu va, hieu ve, hieu su
han tap » han tai, toan tap, nhan tai
vu cham » va cham, vu kham, tu cham
y nang » ky nang, ly nang, v nang
ho hoi » hoa 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 (hoc hoi)). hieu vu cham thuc van ((phan tap) OR (han tap)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((ho hoi) OR (hoc hoi)). hieu vu cham thuc van ((phan tap) OR (han tap)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((ho hoi) or (hoc hoi)). hieu vu cham thuc van ((phan tap) OR (han tap)) cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ho hoi) or (hoc hoi)). hieu vu cham thuc van ((phan tap) OR (han tap)) cua triet*.