Perhaps you should try some spelling variations:
nhan thuc » nhan luc, dan thuc, toan thuc
nhanh hai » nhanh thai, thanh hai, nhanh ha
thuc van » thuc vat, thuc dan, thuc va
hanh hai » thanh hai, hang hai, hanh tai
sanh ty » sach ty, canh tay
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve nhan » ve nha, de nhan, va nhan
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: do sanh ty nang ma hoi. hieu ve nhan thuc van ((hanh hai) OR (nhanh hai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "do sanh ty nang ma hoi. hieu ve nhan thuc van ((hanh hai) OR (nhanh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: do sanh ty nang ma hoi. hieu ve nhan thuc van ((hanh hai) OR (nhanh hai)) cua tre*.