Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nham thu, pham thuc
cua triet » cua viet, su triet, va triet
phat lap » phan lap, phap lap, phat lam
nam thuc » nam thuoc, am thuc, nam thu
lap cua » lai cua, tap cua, lam cua
te sach » toc sach
sach ly » sach y, sach lo, sach ty
hoi hoi » hoi hoc, hoc hoi, hoi doi
ly nang » ky nang, ly hang, ly vang
hieu vu » hieu va, hieu ve, hieu su
ho hoi » hoc hoi, hoa 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: te sach ly nang ((ho hoi) or (hoi hoi)). hieu vu ((nham thuc) or (nam thuc)) va phat lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((ho hoi) OR (hoi hoi)). hieu vu ((nham thuc) OR (nam thuc)) va phat lap cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((ho hoi) or (hoi hoi)). hieu vu ((nham thuc) or (nam thuc)) va phat lap cua triet*.