Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu van » thien van, lieu va, hieu ve
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
vai cua » dai cua, hai cua, lai cua
tuc va » thuc va, truc va, tuc xa

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 ((hang xa) OR (hang ca)) hoi. ((hieu va) or (hieu van)) cam tuc va hanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((hang xa) OR (hang ca)) hoi. ((hieu va) OR (hieu van)) cam tuc va hanh vai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((hang xa) OR (hang ca)) hoi. ((hieu va) or (hieu van)) cam tuc va hanh vai cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((hang xa) OR (hang ca)) hoi. ((hieu va) or (hieu van)) cam tuc va hanh vai cua vat*.