Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
hanh lai » hanh lam, hanh tai, thanh lap
duc manh » suc manh, duc anh, duc minh
lai cua » dai cua, hai cua, lai chau
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
va cam » va cham, va cac, va cao

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 y) or (sach thu)) ((nang xa) OR (nang ma)) hoi. hieu va cam duc manh hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach thu)) ((nang xa) OR (nang ma)) hoi. hieu va cam duc manh hanh lai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sach thu)) ((nang xa) OR (nang ma)) hoi. hieu va cam duc manh hanh lai cua triet*".