Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
thuy san » thuat san, thuy anh
cuc tre » duc tre, cua tre, cuu tre
dac van » cac van, dao van, dam van
cac dac » cac dan, cac dai, cac bac
nang ho » nang hoc, nang co, tang ho
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can
ho lai » o lai

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) or (tu san))) or (thuy san)) ky nang ho lai. hieu ve cac dac van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sac) OR (tu san))) OR (thuy san)) ky nang ho lai. hieu ve cac dac van hanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: ((((tu sac) or (tu san))) or (thuy san)) ky nang ho lai. hieu ve cac dac van hanh tai cuc tre*.