Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nang hoc » nang doc, dong hoc, hang hoa
hanh tai » thanh tai, hang tai, han tai
tu cham » toc cham, thi cham
tai cua » thai cua, tai cuc, tri cua
vu kham » vu khanh
va hanh » van hanh, va thanh, va danh
cua te » cua tu
lo va » lo van, lao va, ly va

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 y ((nang hoc) or (nang luc)) hoi. hieu ((vu kham) or (tu cham)) lo va hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang hoc) OR (nang luc)) hoi. hieu ((vu kham) OR (tu cham)) lo va hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang hoc) or (nang luc)) hoi. hieu ((vu kham) or (tu cham)) lo va hanh tai cua te*.