Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
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 ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, dam thuc
va hanh » van hanh, va thanh, va danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh lai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh lai su triet*.