Perhaps you should try some spelling variations:
ninh viet » sinh vien, anh viet
thuc van » thuc vat, thuc dan, thuc va
van ninh » van minh, van dinh, van binh
viet cua » viec cua, viet ca, viet qua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
ve chat » va chat, van chat
ve tai » te tai, de tai, le tai
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky lang xa hoi. hieu ((ve tai) or (ve chat)) thuc van ninh viet cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang xa hoi. hieu ((ve tai) OR (ve chat)) thuc van ninh viet cua te.
• Adding a wildcard symbol may retrieve word variants: tu cac ky lang xa hoi. hieu ((ve tai) or (ve chat)) thuc van ninh viet cua te*.