Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
duc van » duc va, duc manh, duc phan
hai cua » thai cua, dai cua, hoi cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu va cham ((duc van) or (duc tan)) thanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu va cham ((duc van) OR (duc tan)) thanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu va cham ((duc van) or (duc tan)) thanh hai cua triet*.