Perhaps you should try some spelling variations:
hang hai » hoang hai, hang tai, thanh hai
va thuat » ky thuat, ki thuat, va thuc
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
va hang » van hang, va nang, va lang
va cham » va chat, va tham
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
sach v » sach va, sach y, sach 2
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang
cua te » cua tu

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 v nang ((mai hoi) or (dai hoi)). lieu ((va cham) or (va thuat)) xuc va hang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((mai hoi) OR (dai hoi)). lieu ((va cham) OR (va thuat)) xuc va hang hai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((mai hoi) or (dai hoi)). lieu ((va cham) or (va thuat)) xuc va hang hai cua te*.