Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
van hang » van khang, van hoang, van thang
thi van » thi lan, thi hanh, thi nang
nam mua » nam cua, nam qua, nam xua
mua van » ma van, mua ban, mua dan
hang di » hang doi, hang vi, hang dien
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuat sach)) y nang ((xa hoi) or (ma hoa)). thi van nam mua van hang di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y nang ((xa hoi) OR (ma hoa)). thi van nam mua van hang di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) y nang ((xa hoi) or (ma hoa)). thi van nam mua van hang di cua tre*.