Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hoc trieu » hoc thieu, hoc tieu, hoc dieu
trong dan » trong dang, trong san, trong tan
van dung » van dong, xay dung, tin dung
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
va dung » va duong, vat dung, va ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - ((hanh trinh) or (canh tranh)) ((va dung) OR (van dung)) trong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - ((hanh trinh) OR (canh tranh)) ((va dung) OR (van dung)) trong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trieu tinh - ((hanh trinh) or (canh tranh)) ((va dung) OR (van dung)) trong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - ((hanh trinh) or (canh tranh)) ((va dung) OR (van dung)) trong dan phan cau*.