Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
van phan » van phong, van thanh, luan phan
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » su sach, te sach, tu cach
nang co » nang cao, nang doc, nang noi
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu cua
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) OR (tu sach)) ky nang co hoc. hieu van phan thuc dan hanh de cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang co hoc. hieu van phan thuc dan hanh de cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang co hoc. hieu van phan thuc dan hanh de cua te*.