Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
doc sach » hoc sach, toc sach, nuoc sach
vat hanh » vat thanh, van hanh, va hanh
hanh van » thanh van, khanh van, hanh va
su triet » su viet, su tien, ve triet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu vi » hieu voi, hieu va, hieu ve
van su » dan su

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ty nang xa hoi. hieu vi pham thuc vat hanh van su triet~.
• Adding a wildcard symbol may retrieve word variants: doc sach ty nang xa hoi. hieu vi pham thuc vat hanh van su triet*.