Perhaps you should try some spelling variations:
pham duy » pham duc
mai khoi » mai khoa, tai khoa, cac khoi
te sach » toc sach
lai cua » hai cua, lai chau, thai cua
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
duy va » duy vat, duy van, day va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ((mai khoi) or (xa hoi)). hieu ve pham duy va danh ((lai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ((mai khoi) OR (xa hoi)). hieu ve pham duy va danh ((lai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ((mai khoi) or (xa hoi)). hieu ve pham duy va danh ((lai cua) or (dai cua)) tre*.