Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
hanh hai » thanh hai, nhanh hai, hang hai
co sach » bo sach, cuon sach, hoc sach
nang ma » tang ma, sang ma, mang may
chuc va » thuc va, thuc vat
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach thu ((nang ma) or (nang cao)) hoi. hieu van pham chuc va hanh hai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach thu ((nang ma) OR (nang cao)) hoi. hieu van pham chuc va hanh hai cua tuc.
• Adding a wildcard symbol may retrieve word variants: co sach thu ((nang ma) or (nang cao)) hoi. hieu van pham chuc va hanh hai cua tuc*.