Perhaps you should try some spelling variations:
hang hai » hoang hai, hang tai, thanh hai
hanh hai » thanh hai, nhanh hai, hanh tai
cam tuc » cam xuc, cam tu, nam thuc
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
tu can » tu ban, tu cac, thu canh
tuc va » thuc va, truc va, tuc xa
can ky » van ky, dan ky, ban ky
ve cam » ve cham, ve cac, va cam
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 can ky ((nang ma) or (nang x)) hoi. hieu ve cam tuc va ((hanh hai) OR (hang hai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky ((nang ma) OR (nang x)) hoi. hieu ve cam tuc va ((hanh hai) OR (hang hai)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu can ky ((nang ma) or (nang x)) hoi. hieu ve cam tuc va ((hanh hai) OR (hang hai)) cua te*".