Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
phap thuc » phap thu, phap hoc, phap tu
thu nang » thi nang, thu hang, thu bang
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
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 nang ma hoi. hieu v ((pham chuc) or (phap thuc)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu nang ma hoi. hieu v ((pham chuc) OR (phap thuc)) va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach thu nang ma hoi. hieu v ((pham chuc) or (phap thuc)) va hanh vai cua te*.