Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
nang mai » nang ma, nang tai, lang mai
qua pham » quan pham, quy pham, qua cham
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

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) or (hoc sach)) y nang mai hoi. hieu qua pham duc va thanh va ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) y nang mai hoi. hieu qua pham duc va thanh va ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) y nang mai hoi. hieu qua pham duc va thanh va ((cua te) or (cua tu))*.