Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
thai cua » than cua, tai cuc, tri cua
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, cam tu, nam thuc
va nhan » van nhan, ca nhan, va phan
tai cua » tai cuc, tri cua, dai cua
va cam » va cham, va cac, va cao
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: ((thu sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc va nhan ((tai cua) OR (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (hoc sach)) ky nang xa hoi. lieu va cam tuc va nhan ((tai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc va nhan ((tai cua) OR (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc va nhan ((tai cua) OR (thai cua)) tre*.