Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
thu sach » tu sach, thuat sach, thuoc sach
duc phan » dung phan, duc thang, duc phung
hanh lai » hanh lam, hanh tai, thanh lap
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
duc van » duc va, duc manh, duc hanh
ve cam » ve cham, ve cac, va cam

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 cam ((((duc van) OR (duc phan))) or (duc tan)) hanh lai chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ve cam ((((duc van) OR (duc phan))) OR (duc tan)) hanh lai chau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu ve cam ((((duc van) OR (duc phan))) or (duc tan)) hanh lai chau triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ve cam ((((duc van) OR (duc phan))) or (duc tan)) hanh lai chau triet*.