Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
van bac » van ban, van bao, dan bac
van hac » van hoc, van ha, van hai
truc va » thuc va, thuc vat, trung va
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
di cuu » di cau, di cua, dinh cuu

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 ma hoi. hieu ((van bac) or (van hac)) truc va xanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu ((van bac) OR (van hac)) truc va xanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ((van bac) or (van hac)) truc va xanh di cuu tre*.