Perhaps you should try some spelling variations:
vat hanh » vat thanh, van hanh, va hanh
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
nang am » nang lam, nang nam, nang tam
hanh di » hanh vi, hanh de, hang di
di su » doi su, ki su, da su
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. ki nang am thuc vat hanh di su triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ki nang am thuc vat hanh di su triet*.