Perhaps you should try some spelling variations:
hieu van » hieu va, thien van
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
xuc va » duc va, tuc va, luc va
va cua » va chua, via cua, ca cua
cua te » cua tu
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 ty nang x hoi. ((hieu ve) or (((hieu van) OR (lieu va)))) cam xuc va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((hieu ve) OR (((hieu van) OR (lieu va)))) cam xuc va hanh va cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. ((hieu ve) or (((hieu van) OR (lieu va)))) cam xuc va hanh va cua te*".