Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
va chat » van chat, va phat, cao chat
tai cua » thai cua, tai cuc, tri cua
luc van » luoc van, luu van, duc van
va cham » va tham
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
san ky » sang ky, van ky, dan ky
te san » te ban, ke san, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky ((nang xa) or (nang ma)) hoi. hieu ((va cham) or (va chat)) luc van hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky ((nang xa) OR (nang ma)) hoi. hieu ((va cham) OR (va chat)) luc van hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te san ky ((nang xa) or (nang ma)) hoi. hieu ((va cham) or (va chat)) luc van hanh tai cua tre*.