Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
hanh lai » hanh tai, thanh lap, thanh loi
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duy tan » duy tuan, duy van, duy can

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