Perhaps you should try some spelling variations:
phat chuc » pham chuc, phap chuc, phap thuc
thu nang » thi nang, thu hang, thu bang
so sach » bo sach, co sach, hoc sach
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va hanh » van hanh, va thanh, va danh
chuc va » thuc va, thuc vat
hieu ve » hieu va, hieu van
ve phat » va phat, te phat, de phat
nang ma » tang ma, sang ma, nang cao
so sanh » do sanh
ma hoi » mai hoi, xa hoi, ma hoa

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 (so sanh)) thu nang ma hoi. hieu ve phat chuc va hanh ((vai cua) OR (lai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thu nang ma hoi. hieu ve phat chuc va hanh ((vai cua) OR (lai cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) thu nang ma hoi. hieu ve phat chuc va hanh ((vai cua) OR (lai cua)) tu".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) thu nang ma hoi. hieu ve phat chuc va hanh ((vai cua) OR (lai cua)) tu*.