Perhaps you should try some spelling variations:
may nang » may nong, ky nang, cam nang
hang hoi » hang hoa, hang hai, hang doi
te sach » toc sach
hoi cua » hoi chuc
va hang » van hang, va nang, va lang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cao, va cai
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((may nang) or (v nang)) ma hoi. hieu ((va cam) or (va cac)) xuc va hang hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((may nang) OR (v nang)) ma hoi. hieu ((va cam) OR (va cac)) xuc va hang hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((may nang) or (v nang)) ma hoi. hieu ((va cam) or (va cac)) xuc va hang hoi cua tre*.