Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nang mai » nang ma, nang tai, lang mai
hanh doi » thanh doi, hanh noi, hang doi
sach ky » sac ky, sach y, sach ty
doi cua » dai cua, hoi cua
hieu ve » hieu van
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
tuc va » thuc va, truc va, duc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang mai hoi. ((hieu ve) or (hieu va)) cham ((tuc va) OR (tuc xa)) hanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang mai hoi. ((hieu ve) OR (hieu va)) cham ((tuc va) OR (tuc xa)) hanh doi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang mai hoi. ((hieu ve) or (hieu va)) cham ((tuc va) OR (tuc xa)) hanh doi cua te*".