Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh nhan » thanh phan, thanh san, thanh toan
hoc thanh » hoc nhanh, hoan thanh, hoc phan
ban thanh » ban hanh, ban hang
hoi thanh » hai thanh, hoa thanh, ho thanh
sach moi » sach doi, sach hoi, bach mai
nhan dan » phan dau, gian dan, nhan tai
moi tai » hoi tai, mo tai, moi thoi
cuu mon » cuu mo, cuu mot, cuu cong
hoc xa » hoc ma

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 moi tai, nghien cuu mon ((hoc thanh) or (ban thanh)) hoa hoc xa hoi thanh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach moi tai, nghien cuu mon ((hoc thanh) OR (ban thanh)) hoa hoc xa hoi thanh nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuat sach moi tai, nghien cuu mon ((hoc thanh) or (ban thanh)) hoa hoc xa hoi thanh nhan dan*.