Perhaps you should try some spelling variations:
khien thich » bien thich, khien tinh, kien trich
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
lieu tinh » trieu tinh, diep tinh, bien tinh
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((lieu tinh) or (khien thich)) - hanh trinh quan ((hang cong) or (dang cong)) tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((lieu tinh) OR (khien thich)) - hanh trinh quan ((hang cong) OR (dang cong)) tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((lieu tinh) or (khien thich)) - hanh trinh quan ((hang cong) or (dang cong)) tan toan ban*.