Perhaps you should try some spelling variations:
phap thuc » phap thu, phap tu
vat thanh » dat thanh, gat thanh, tat thanh
thanh doi » thanh loi, thanh moi, thanh do
thu sach » tu sach, thuat sach, thuoc sach
phap hoc » phap hoan, phap mo, phap han
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
doi cua » dai cua, hoi cua
co hoi » co hoc, co loi
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: thu sach ky nang co hoi. hieu ve ((phap thuc) OR (phap hoc)) vat thanh doi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang co hoi. hieu ve ((phap thuc) OR (phap hoc)) vat thanh doi cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoi. hieu ve ((phap thuc) OR (phap hoc)) vat thanh doi cua te*.