Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, trinh han
dang cong » dung cong
theo mau » tho mau, theo dau, theo chu
mau sach » mat sach, cau sach, hau sach
trinh va » trinh van, 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 mau sach - hanh ((trinh va) or (((trinh vat) OR (sinh vat)))) dang cong dan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo mau sach - hanh ((trinh va) OR (((trinh vat) OR (sinh vat)))) dang cong dan tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo mau sach - hanh ((trinh va) or (((trinh vat) OR (sinh vat)))) dang cong dan tran cao".
• Adding a wildcard symbol may retrieve word variants: theo mau sach - hanh ((trinh va) or (((trinh vat) OR (sinh vat)))) dang cong dan tran cao*.