Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
phap duc » pham duc, phan duc, phap doc
va thanh » gia thanh, ban thanh, le thanh
hieu va » lieu va
sach ly » sach y, sach lo, sach ty
hang xa » hoang xa, hang va, hang ca
ly hang » ly quang
va tinh » may tinh
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ly hang xa hoi. ((hieu va) OR (hieu qua)) phap duc ((va thanh) or (va tinh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly hang xa hoi. ((hieu va) OR (hieu qua)) phap duc ((va thanh) OR (va tinh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ly hang xa hoi. ((hieu va) OR (hieu qua)) phap duc ((va thanh) or (va tinh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ly hang xa hoi. ((hieu va) OR (hieu qua)) phap duc ((va thanh) or (va tinh)) vi cua te*.