Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
vu cham » va cham, vu kham, tu cham
hai cua » thai cua, hoi cua, lai cua
xuc van » duc van, luc van, vuc van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoi. hieu ((ve cac) or (vu cham)) xuc van thanh ((hai cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu ((ve cac) OR (vu cham)) xuc van thanh ((hai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ma hoi. hieu ((ve cac) or (vu cham)) xuc van thanh ((hai cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu ((ve cac) or (vu cham)) xuc van thanh ((hai cua) OR (dai cua)) tre*.