Perhaps you should try some spelling variations:
thanh binh » thai binh, than kinh, tinh binh
thanh vinh » thanh tinh, than kinh, thanh van
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu san, tu bac

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

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