Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
phan lap » phan dau
nam thuc » nam thuoc, am thuc, nam thu
lap cua » lai cua, tap cua, lam cua
va phan » van phan, va phat, va phap
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
hoi hoi » hoi hoc, hoc hoi, hoi doi
ve nam » he nam, va nam, le nam
ho hoi » hoc hoi, hoa hoi, co hoi
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y nang ((ho hoi) or (hoi hoi)). hieu ve nam thuc va phan lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang ((ho hoi) OR (hoi hoi)). hieu ve nam thuc va phan lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang ((ho hoi) or (hoi hoi)). hieu ve nam thuc va phan lap cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang ((ho hoi) or (hoi hoi)). hieu ve nam thuc va phan lap cua triet*.