Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
pham duy » pham duc
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
duy tan » duy tuan, duc tan, duy van
tu sach » thu sach, te sach, tu cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
su sach » so sach, vu sach
ve pham » vi pham, v pham, ve phan

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