Perhaps you should try some spelling variations:
hang hai » hoang hai, hang tai, thanh hai
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
va hang » van hang, va nang, va lang
cao hoi » cau hoi, co hoi, cao hoc
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai
y nang » ky nang, ly nang, may nang
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (v nang)) cao hoi. hieu ((va cam) OR (va cao)) duc va hang hai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (v nang)) cao hoi. hieu ((va cam) OR (va cao)) duc va hang hai cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (v nang)) cao hoi. hieu ((va cam) OR (va cao)) duc va hang hai cua te*.