Perhaps you should try some spelling variations:
tinh gian » tinh giao, trinh giang, trinh giao
tinh gia » danh gia
cua tre » cua te, cuu tre, cua triet
cau luc » cau truc, cau phuc
hieu va » lieu va, hieu qua
ky tang » ky dang, kho tang, ky trong
va cau » van cau, va cac, va dau
luc va » duc va, tuc va, loc va
vu sac » vu sach, vu san, va sac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky tang) or (ky nang)) xa hoi. hieu va cau luc va ((tinh gian) OR (tinh gia)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky tang) OR (ky nang)) xa hoi. hieu va cau luc va ((tinh gian) OR (tinh gia)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky tang) or (ky nang)) xa hoi. hieu va cau luc va ((tinh gian) OR (tinh gia)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sac ((ky tang) or (ky nang)) xa hoi. hieu va cau luc va ((tinh gian) OR (tinh gia)) cua tre*.