Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hanh hai » thanh hai, nhanh hai, hang hai
thi nang » thi cong, ki nang, thi hanh
nang mai » nang ma, nang tai, lang mai
so sach » co sach, hoc sach
ve pham » vi pham, v pham, ve phan
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
chuc va » thuc va, thuc vat
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
so sanh » do sanh
bo sach » co sach, hoc sach
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) OR (bo sach))) or (so sanh)) thi nang mai hoi. hieu ve pham chuc va hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((so sach) OR (bo sach))) OR (so sanh)) thi nang mai hoi. hieu ve pham chuc va hanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((so sach) OR (bo sach))) or (so sanh)) thi nang mai hoi. hieu ve pham chuc va hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: ((((so sach) OR (bo sach))) or (so sanh)) thi nang mai hoi. hieu ve pham chuc va hanh hai cua te*.