Perhaps you should try some spelling variations:
thien van » thi van
pham thuc » phap thuc, pham chuc, nham thuc
toc sach » hoc sach, doc sach, thuoc sach
van pham » san pham, van phan, van phat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
thuc ca » thuc cua, thuc can, thuc cao
dau cuu » dau cuoi
dau cua » dai cua, day cua, cau cua
ca dan » cac dan, ca dao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. thien van pham thuc ca dan ((dau cuu) OR (dau cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang xa hoi. thien van pham thuc ca dan ((dau cuu) OR (dau cua)) tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. thien van pham thuc ca dan ((dau cuu) OR (dau cua)) tre*.