Perhaps you should try some spelling variations:
hang hai » hoang hai, hang tai, thanh hai
van hang » van khang, van hoang, van thang
te sach » toc sach
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
ve cam » ve cham, ve cac, va cam
cua tu » cua tuc, cua su, cua cu

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 ky nang ((xa hoi) or (dai hoi)). hieu ve cam duc van hang hai ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((xa hoi) OR (dai hoi)). hieu ve cam duc van hang hai ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((xa hoi) or (dai hoi)). hieu ve cam duc van hang hai ((cua te) or (cua tu))*.