Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
thanh va » thanh van, hanh va, thanh ha
thu sach » thuat sach, thuoc sach, thu hoach
nang mai » nang ma, nang tai, lang mai
thanh vi » hanh vi, thanh ve, nhanh vi
xuc ban » duc ban, cuc ban, quoc ban
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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 cam xuc ban ((thanh vi) OR (thanh va)) nha thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang mai hoi. hieu ve cam xuc ban ((thanh vi) OR (thanh va)) nha thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang mai hoi. hieu ve cam xuc ban ((thanh vi) OR (thanh va)) nha thuoc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang mai hoi. hieu ve cam xuc ban ((thanh vi) OR (thanh va)) nha thuoc*.