Perhaps you should try some spelling variations:
dat duoc » dat nuoc, da duoc, luat duoc
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
duoc va » nuoc va, duc va, duoc ma
di cau » da cau, diem cau
di cuu » di cua, dinh cuu
sac ky » cac ky
ma hoi » mai hoi, xa hoi, ma hoa
ve dat » de dat, va dat, ve dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sac ky) or (sai ky)) nang ma hoi. hieu ve dat duoc va hanh ((di cuu) OR (di cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sac ky) OR (sai ky)) nang ma hoi. hieu ve dat duoc va hanh ((di cuu) OR (di cau)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sac ky) or (sai ky)) nang ma hoi. hieu ve dat duoc va hanh ((di cuu) OR (di cau)) tre*".