Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va cao » va cac, va co, va dao
ve cam » ve cham, va cam, ve cai
vai su » va su, van su, lai su
ve cac » va cac, vien cac

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 ty nang xa hoi. hieu ((((ve cam) or (ve cac))) or (va cao)) thuc va hanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((((ve cam) OR (ve cac))) OR (va cao)) thuc va hanh vai su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((((ve cam) or (ve cac))) or (va cao)) thuc va hanh vai su triet*.