Perhaps you should try some spelling variations:
kham thuc » nham thuc, pham thuc, tham thuc
cua triet » cua viet, su triet, va triet
phan lap » phan dau
ve triet » va trien, su triet
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
sach ty » sach y, sach tu, sach thu
thuc va » thuc vat, thuc dan, thuc day
va phan » van phan, va phat, va phap
hang ho » hang hoa, hang cho, hang ha
ty hang » ly hang, ty xang, thi hang
te sach » toc sach
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: te sach ty hang ho hoi. hieu vu kham thuc va phan lap ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang ho hoi. hieu vu kham thuc va phan lap ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ty hang ho hoi. hieu vu kham thuc va phan lap ((cua triet) or (ve triet))*.