Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
duc manh » suc manh, duc anh, duc minh
hieu van » hieu va, thien van, hieu ve
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
cam duc » cam xuc, cao duc, pham duc
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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)) ky nang x ho. ((hieu van) or (lieu va)) cam duc manh hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x ho. ((hieu van) OR (lieu va)) cam duc manh hanh di cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang x ho. ((hieu van) or (lieu va)) cam duc manh hanh di cua tu*.