Perhaps you should try some spelling variations:
hang hai » hoang hai, hang tai, thanh hai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
cao suc » cao su, cao duc
va hang » van hang, va nang, va lang
hai cua » thai cua, dai cua, hoi cua
y nang » ly nang, v nang, may 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: tu sach ((y nang) or (ky nang)) xa hoi. hieu ve ((cam duc) or (cao suc)) va hang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) xa hoi. hieu ve ((cam duc) OR (cao suc)) va hang hai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ky nang)) xa hoi. hieu ve ((cam duc) or (cao suc)) va hang hai cua te*.