Perhaps you should try some spelling variations:
tinh vinh » tinh ninh, tinh hinh, tinh sinh
tinh binh » ninh binh, tinh ninh
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thu sach)) ky nang xa hoi. hieu van cam xuc van ((tinh vinh) OR (tinh binh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky nang xa hoi. hieu van cam xuc van ((tinh vinh) OR (tinh binh)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thu sach)) ky nang xa hoi. hieu van cam xuc van ((tinh vinh) OR (tinh binh)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky nang xa hoi. hieu van cam xuc van ((tinh vinh) OR (tinh binh)) cua tre*.