Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trinh vat » trinh van, trinh luat, sinh vat
cua tinh » cua sinh, va tinh, ha tinh
trinh va » trinh van, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau
moc cua » hoc cua, moi cua, doc cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: moc cua tinh - canh ((trinh va) or (trinh vat)) thong cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: moc cua tinh - canh ((trinh va) OR (trinh vat)) thong cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: moc cua tinh - canh ((trinh va) or (trinh vat)) thong cong dan chan cau*.