Perhaps you should try some spelling variations:
trinh ve » trinh he, trinh vi, trinh viet
trinh va » trinh van, trinh vat, trinh vi
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
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, cua triet
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: su sach ty nang xa hoi. hieu ve cac duc va ((trinh ve) OR (trinh va)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ve cac duc va ((trinh ve) OR (trinh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve cac duc va ((trinh ve) OR (trinh va)) cua tre*.