Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cac dai » cac dan, cac bai, can dai
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty nang xa hoi. lieu va cac dai ((va thanh) or (van hanh)) vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty nang xa hoi. lieu va cac dai ((va thanh) OR (van hanh)) vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty nang xa hoi. lieu va cac dai ((va thanh) or (van hanh)) vi cua vat*.