Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, dam thuc
hieu ve » hieu va
xang x » nang x
va cua » va chua, via cua, ca cua
cua te » cua tu

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 xang x ho. ((hieu ve) or (hieu van)) ((cam tuc) OR (nam thuc)) va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang x ho. ((hieu ve) OR (hieu van)) ((cam tuc) OR (nam thuc)) va hanh va cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang x ho. ((hieu ve) or (hieu van)) ((cam tuc) OR (nam thuc)) va hanh va cua te*".