Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh hai » thanh hoa, thanh san
tu sach » thu sach, su sach, te sach
duc van » duc va, duc tan, duc manh
sach ty » sach y, sach tu, sach thu
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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 ty nang xa hoi. hieu va cam duc van ((((thanh hai) OR (thanh phan))) or (dung tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu va cam duc van ((((thanh hai) OR (thanh phan))) OR (dung tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu va cam duc van ((((thanh hai) OR (thanh phan))) or (dung tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu va cam duc van ((((thanh hai) OR (thanh phan))) or (dung tai)) cua tre*.