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