Perhaps you should try some spelling variations:
tinh vinh » tinh ninh, tinh binh, tinh hinh
vinh cuu » dinh cuu, sinh cua, dinh cu
mon hoc » toan hoc, dong hoc
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
loc va » hoc va, luc va

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 ky nang ((mon hoc) or (x ho)). hieu ((ve cham) OR (va cham)) loc va tinh vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((mon hoc) OR (x ho)). hieu ((ve cham) OR (va cham)) loc va tinh vinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((mon hoc) or (x ho)). hieu ((ve cham) OR (va cham)) loc va tinh vinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((mon hoc) or (x ho)). hieu ((ve cham) OR (va cham)) loc va tinh vinh cuu tre*.