Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
trung va » truong va, trang va, trung ha
dau tren » dau tien, dat tren, dau tieng
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat
nang co » nang cao, nang doc, nang noi
hanh ve » hanh vi, hanh va, hanh kem
tuc va » thuc va, tuc xa, duc va
ve dau » va dau, ve du, ke dau

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 ky nang co hoc. hieu ve chat ((tuc va) or (((truc va) OR (trung va)))) hanh ve dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoc. hieu ve chat ((tuc va) OR (((truc va) OR (trung va)))) hanh ve dau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang co hoc. hieu ve chat ((tuc va) or (((truc va) OR (trung va)))) hanh ve dau tren*".