Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
thu sach » tu sach, thuat sach, thuoc sach
thanh ha » thanh hoa, thanh hai, nhanh ha
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc van » duc va, duc manh, duc phan
ha chau » hat chau, a chau, lai chau

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 ve cham ((duc van) or (duc tan)) thanh ha chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ve cham ((duc van) OR (duc tan)) thanh ha chau triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ve cham ((duc van) or (duc tan)) thanh ha chau triet*.