Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach tham, cach thuc
vai cua » dai cua, hai cua, lai cua
tang ma » mang may, tang van
va hanh » van hanh, va thanh, va danh
phap mo » nhap mon
hieu v » hieu va, hieu ve, hieu 2
ma hoi » mai hoi, xa hoi, ma hoa
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 thu) OR (sach thieu)) tang ma hoi. hieu v ((pham chuc) or (phap mo)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach thu) OR (sach thieu)) tang ma hoi. hieu v ((pham chuc) OR (phap mo)) va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach thu) OR (sach thieu)) tang ma hoi. hieu v ((pham chuc) or (phap mo)) va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sach thu) OR (sach thieu)) tang ma hoi. hieu v ((pham chuc) or (phap mo)) va hanh vai cua te*.