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
mai hoi » mai khoi, lai hoi, mai doi
hai cua » thai cua, dai cua, hoi cua
dai hoi » dai hoc, dai hai, dai moi
va cham » va chat, va tham
va hang » van hang, va nang, va lang
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v 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 y 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 y nang ((mai hoi) OR (dai hoi)). lieu ((va cham) OR (va thuat)) xuc va hang hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y 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 y nang ((mai hoi) OR (dai hoi)). lieu ((va cham) or (va thuat)) xuc va hang hai cua te*.