Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
duc van » duc va, duc tan, duc manh
cua tu » cua tuc, cua su, cua cu
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: so sach ty nang x hoi. hieu van pham duc van hanh vai ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang x hoi. hieu van pham duc van hanh vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. hieu van pham duc van hanh vai ((cua te) OR (cua tu))*.