Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
hien bac » mien bac, hien cac, tien bac
bac thue » bac thua, sach thue, cuc thue
tu sach » thu sach, su sach, te sach
dang xa » dang xay, lang xa, dang ha
thue va » thuc va, thuyet va, thuc vat
chi tre » choi tre, cho tre, chi tro

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 _ dang xa hoi. hieu hien bac thue va ((trinh van) OR (trinh han)) chi tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ dang xa hoi. hieu hien bac thue va ((trinh van) OR (trinh han)) chi tre".
• Adding a wildcard symbol may retrieve word variants: tu sach _ dang xa hoi. hieu hien bac thue va ((trinh van) OR (trinh han)) chi tre*.