Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
hai cua » thai cua, hoi cua, lai cua
xa hanh » xa thanh, xa khanh, va hanh
nam xuc » cam xuc, nam xua, nam thuc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
va nam » van nam, ha nam, va nay
xuc xa » tuc xa, buc xa
ma hoi » xa hoi, ma hoa, me hoi

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 ky tang ((ma hoi) OR (mai hoi)). hieu va nam xuc xa hanh ((hai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang ((ma hoi) OR (mai hoi)). hieu va nam xuc xa hanh ((hai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang ((ma hoi) OR (mai hoi)). hieu va nam xuc xa hanh ((hai cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang ((ma hoi) OR (mai hoi)). hieu va nam xuc xa hanh ((hai cua) or (dai cua)) tre*.