Perhaps you should try some spelling variations:
khoa tang » kho tang, khoa dang, khoa tieng
cau tren » cu tren, dau tren, ca tren
dai khoa » da khoa, tai khoa, dac khoa
danh de » hanh de, dan de, dang de
van hoi » van hoa, van hoe, van loi
van hoc » van hoa
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
cua te » cua tu
vu dai » vi dai, va dai, vu hai
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu dai khoa tang ((van hoi) or (van hoc)). hieu ve cam xuc va danh de ((cua te) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu dai khoa tang ((van hoi) OR (van hoc)). hieu ve cam xuc va danh de ((cua te) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu dai khoa tang ((van hoi) or (van hoc)). hieu ve cam xuc va danh de ((cua te) or (cau tren))*.