Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
mai khoi » mai khoa, tai khoa, cac khoi
phan cua » nhan cua, than cua, phat cua
va thanh » gia thanh, ban thanh, va tinh
phap duy » phap day, pham duy, phan duy
va phap » va phat, ban phap
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach 2, sach vay
ma hoi » mai hoi, xa hoi, ma hoa
duy va » duy vat, duy van, day va

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 v) OR (sach y)) nang ((ma hoi) or (mai khoi)). hieu va phap duy va thanh phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) nang ((ma hoi) OR (mai khoi)). hieu va phap duy va thanh phan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) OR (sach y)) nang ((ma hoi) or (mai khoi)). hieu va phap duy va thanh phan cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) OR (sach y)) nang ((ma hoi) or (mai khoi)). hieu va phap duy va thanh phan cua tre*.