Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
sach tham » sach nha
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
hieu san » hieu van, hieu sau, chieu sang
so sach » so sanh, bo sach, co sach
chuc va » thuc va, thuc vat
nang ma » tang ma, sang ma, mang may
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: so sach tham ((nang ma) OR (nang cao)) hoi. hieu san pham chuc va ((hanh vai) or (hanh tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tham ((nang ma) OR (nang cao)) hoi. hieu san pham chuc va ((hanh vai) OR (hanh tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tham ((nang ma) OR (nang cao)) hoi. hieu san pham chuc va ((hanh vai) or (hanh tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: so sach tham ((nang ma) OR (nang cao)) hoi. hieu san pham chuc va ((hanh vai) or (hanh tai)) cua te*.