Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
tan thanh » tran thanh, tang thanh, toan thanh
thien van » thi van
hoc sach » hoc cac, hoc anh
tinh cau » trinh cau, tinh cao, sinh cau
cau treo » cau theo, cau tren, cau triet
dang xa » dang xay, lang xa, dang ha
cac duc » cao duc, cac dac, cac nuoc
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (hoc sinh)) y dang xa hoi. thien van ((cac duc) OR (cac du)) tan thanh tinh cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc sinh)) y dang xa hoi. thien van ((cac duc) OR (cac du)) tan thanh tinh cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (hoc sinh)) y dang xa hoi. thien van ((cac duc) OR (cac du)) tan thanh tinh cau treo".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (hoc sinh)) y dang xa hoi. thien van ((cac duc) OR (cac du)) tan thanh tinh cau treo*.