Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
nang mai » nang ma, nang tai, lang mai
tu sach » su sach, te sach, tu cach
va hanh » van hanh, va thanh, va danh
mai hoi » mai khoi, dai hoi, lai hoi
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
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: ((tu sach) OR (thu sach)) y nang mai hoi. hieu ((ve cai) or (va cam)) tuc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang mai hoi. hieu ((ve cai) OR (va cam)) tuc va hanh vi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang mai hoi. hieu ((ve cai) or (va cam)) tuc va hanh vi cua vat*".