Perhaps you should try some spelling variations:
thong tien » thong tin, thang tien, thong dien
hong tien » dong tien, tong tien, hang tien
hoc thong » hoc thuong, hoc trong, hoc hong
sach phan » sach han, mach phan, sach phat
phe thai » pho thai, he than, khi thai
thai hoc » dai hoc, bai hoc, hoi hoc
sach cha » sach nha, sach che, sach ha
ve gioi » vien gioi, van gioi
co hong » co hoang, co huong, co phong
ve giai » va giai, ve giao, de giai
tu sach » thu sach, te sach, tu cach
cha phe » ca phe, chau phi, chau phu
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach cha phe thai hoc thong tien ) or ( su sach phan ((ve gioi) OR (ve giai)) co hong tien ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach cha phe thai hoc thong tien ) OR ( su sach phan ((ve gioi) OR (ve giai)) co hong tien )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach cha phe thai hoc thong tien ) or ( su sach phan ((ve gioi) OR (ve giai)) co hong tien ))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach cha phe thai hoc thong tien ) or ( su sach phan ((ve gioi) OR (ve giai)) co hong tien ))*.