Perhaps you should try some spelling variations:
tinh vinh » tinh ninh, tinh binh, tinh hinh
cham loc » cham soc, chon loc, cham o
vinh cau » sinh cau, vinh cuu, minh cau
cau tren » cu tren, dau tren, ca tren
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va tinh » may tinh
mo hoc » mon hoc, co hoc
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 ((mo hoc) or (x ho)). hieu va cham loc va tinh vinh cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((mo hoc) OR (x ho)). hieu va cham loc va tinh vinh cau tren.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((mo hoc) or (x ho)). hieu va cham loc va tinh vinh cau tren*.