Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
su triet » su viet, su tien, ve triet
tu sach » thu sach, te sach, tu cach
su sach » so sach
vu sach » vu bach, vu khach
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh le » thanh le, hanh ve, hanh de
le su » ve su, le vu, ly su

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) or (vu sach)))) tu nang x ho. hieu va cham duc va hanh le su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((su sach) OR (vu sach)))) tu nang x ho. hieu va cham duc va hanh le su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((su sach) or (vu sach)))) tu nang x ho. hieu va cham duc va hanh le su triet*.