Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
dao thanh » ban thanh, tro thanh, de thanh
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
thuc dao » thuc dan, thuc day, chuc dao
va phap » va phat, ban phap
hieu va » lieu va, hieu qua
lang ha » long ha
cuu tre » cua tre, cau tren, cau treo
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((hanh kem) or (sach y)) lang ha hoi. hieu va phap thuc dao thanh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((hanh kem) OR (sach y)) lang ha hoi. hieu va phap thuc dao thanh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu ((hanh kem) or (sach y)) lang ha hoi. hieu va phap thuc dao thanh vi ((dua tren) or (cuu tre))*.