Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu va » hieu qua
luc van » luoc van, duc van, luc va
luu van » cuu van, luan van, luu hanh
lai cua » dai cua, hai cua, lai chau
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 ty hang xa hoi. ((hieu va) or (lieu va)) cuoc ((luc van) OR (luu van)) hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty hang xa hoi. ((hieu va) OR (lieu va)) cuoc ((luc van) OR (luu van)) hanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty hang xa hoi. ((hieu va) or (lieu va)) cuoc ((luc van) OR (luu van)) hanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty hang xa hoi. ((hieu va) or (lieu va)) cuoc ((luc van) OR (luu van)) hanh lai cua te*.