Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
ky lang » ky dang, ky tang, tay lang
tinh ca » tinh cao, tinh cua, tinh va
va tinh » may tinh
ca cua » co cua
luc va » duc va, tuc va, loc va
vu sac » vu sach, vu san, va sac
ke cau » ket cau
ve cau » va cau, ve cac, le cau

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