Perhaps you should try some spelling variations:
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
theo rau » theo dau, theo mau, theo chu
rau sach » cau sach, hau sach, khau sach
trinh va » trinh vat, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan tran » dang tran, tan tran, dan than
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo rau sach - hanh ((trinh va) OR (trinh van)) hang cong dan tran cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo rau sach - hanh ((trinh va) OR (trinh van)) hang cong dan tran cao".
• Adding a wildcard symbol may retrieve word variants: theo rau sach - hanh ((trinh va) OR (trinh van)) hang cong dan tran cao*.