Perhaps you should try some spelling variations:
trong xuong » trong luong, trong tuong, trong muong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua
xuong dan » huong dan, xuong san, tuong dan
manh cua » doanh cua, ban cua
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - canh ((tranh cua) or (manh cua)) trong xuong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh ((tranh cua) OR (manh cua)) trong xuong dan than cau*.