Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
su sach » so sach, vu sach
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
te cua » tue cua, le cua
de cua » le cua, dieu cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) tu nang x hoi. hieu va cham duc va hanh ((te cua) OR (de cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) tu nang x hoi. hieu va cham duc va hanh ((te cua) OR (de cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thu sach)) tu nang x hoi. hieu va cham duc va hanh ((te cua) OR (de cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) tu nang x hoi. hieu va cham duc va hanh ((te cua) OR (de cua)) triet*.