Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, pham huy
sach tham » sach nha
kham chua » kham pha
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, cach thuc
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
cua tu » cua tuc, cua su, cua cu

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