Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
cuu tre » cua tre, cau tren, cau treo
ca tren » cau tren, cu tren, la tren
ve cam » ve cham, ve cac, va cam

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 lang) or (ky nang)) mai khoi. hieu ve cam xuc van hanh tai ((cuu tre) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky lang) OR (ky nang)) mai khoi. hieu ve cam xuc van hanh tai ((cuu tre) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky lang) or (ky nang)) mai khoi. hieu ve cam xuc van hanh tai ((cuu tre) or (ca tren))*.