Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
hoc sach » hoc sinh, hoc cac
nang mai » nang ma, nang tai, lang mai
hai cuc » tai cuc, hai cua, thai cua
cam dua » ca dua, cay dua, cach dua
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cuc tre » duc tre, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) OR (hoc anh)) ty nang mai hoi. hieu va ((cam dua) or (chay dua)) ban thanh hai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc anh)) ty nang mai hoi. hieu va ((cam dua) OR (chay dua)) ban thanh hai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc anh)) ty nang mai hoi. hieu va ((cam dua) or (chay dua)) ban thanh hai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc anh)) ty nang mai hoi. hieu va ((cam dua) or (chay dua)) ban thanh hai cuc tre*.