Perhaps you should try some spelling variations:
dang vinh » dang dinh, dang sinh, dang tinh
thi nang » thi cong, ki nang, thi hanh
cham duc » pham duc, pham duy, phan duc
vinh ba » dinh ba, vinh ha, tinh bac
va dang » van dang, va nang, va lang
sach ky » sac ky, sach y, sach ty
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
ba tren » la tren, ca tren, xa tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) or (nang ma)) hoi. thi nang ((cham duc) OR (cham soc)) va dang vinh ba tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang ma)) hoi. thi nang ((cham duc) OR (cham soc)) va dang vinh ba tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (nang ma)) hoi. thi nang ((cham duc) OR (cham soc)) va dang vinh ba tren*".