Perhaps you should try some spelling variations:
khau thuoc » khang thuoc, khau thuong, nha thuoc
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » cua viet, su triet, va triet
vat hanh » vat thanh, van hanh, va hanh
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu vu » hieu va, hieu ve, hieu su
hai cua » thai cua, dai cua, hoi cua

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 xang xa hoi. hieu vu ((khau thuoc) or (pham thuc)) vat hanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. hieu vu ((khau thuoc) OR (pham thuc)) vat hanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. hieu vu ((khau thuoc) or (pham thuc)) vat hanh hai cua triet*.