Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
lang van » dang van, tang van, hoang van
va thanh » gia thanh, ban thanh, va tinh
dua tren » dung tren
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
la tren » loai tren, dat tren, dau tren
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((lang van) or (nang x)) hoi. hieu ve pham duc va thanh vien ((la tren) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang van) OR (nang x)) hoi. hieu ve pham duc va thanh vien ((la tren) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang van) or (nang x)) hoi. hieu ve pham duc va thanh vien ((la tren) or (dua tren))*.