Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
dan thanh » dang thanh, danh thanh, ban thanh
pham thuc » phap thuc, pham chuc, nham thuc
dau tren » dau tien, dat tren, dau trong
thanh va » thanh van, hanh va, thanh ha
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
va pham » van pham, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang xa) or (nang ma)) hoi. lieu va pham thuc dan thanh va ((dau tren) OR (dau tieng))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang ma)) hoi. lieu va pham thuc dan thanh va ((dau tren) OR (dau tieng))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) or (nang ma)) hoi. lieu va pham thuc dan thanh va ((dau tren) OR (dau tieng))*".