Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
danh vai » danh sai, danh va, doanh van
sach thu » sach thue, sach thieu, sach tham
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
cu tren » tu tren, dua tren
hieu ve » hieu van
nang xa » lang xa, nang ma, mang xa
vai cu » vai cua, van cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu ((nang xa) or (nang x)) hoi. ((hieu ve) or (hieu va)) pham thuc va danh vai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu va)) pham thuc va danh vai cu tren.
• Adding a wildcard symbol may retrieve word variants: tu sach thu ((nang xa) or (nang x)) hoi. ((hieu ve) or (hieu va)) pham thuc va danh vai cu tren*.