Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc van » duc van, luc van, xuc ban
doi cua » hoi cua, dong cua
y nang » ky nang, ly nang, v nang
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: tu sach y nang x hoi. hieu van lam xuc van hanh ((dai cua) or (doi cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van lam xuc van hanh ((dai cua) OR (doi cua)) vat.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van lam xuc van hanh ((dai cua) or (doi cua)) vat*.